Similar words: would, should, heart and soul, coup, court, course, couch, cousin. Meaning: [kæn;kən] 
verb.1. to be able to; have the ability, power, or skill to: She can solve the problem easily, I'm sure. 2. to know how to: He can play chess, although he's not particularly good at it. 3. to have the power or means to: A dictator can impose his will on the people. 4. to have the right or qualifications to: He can change whatever he wishes in the script. 5. may; have permission to: Can I speak to you for a moment? 6. to have the possibility: A coin can land on either side. v.t., v.i.7. Obs. to know. [bef. 900; ME, OE, pres. ind. sing. 1st, 3rd person of cunnan to know, know how; c. G, ON, Goth kann; see KEN, KNOW]Usage. CAN1 and MAY1 are frequently but not always interchangeable in senses indicating possibility: A power failure can (or may) occur at any time. Despite the insistence by some, that CAN means only "to be able" and MAY means "to be permitted," both are regularly used in seeking or granting permission: Can (or May) I borrow your tape recorder? You can (or may) use it tomorrow.Sentences using CAN occur chiefly in spoken English. MAY in this sense occurs more frequently in formal contexts: May I address the court, Your Honor? In negative constructions, CAN'T or CANNOT is more common than MAY NOT: You can't have it today. I need it myself. The contraction MAYN'T is rare.CAN BUT and CANNOT BUT are formal and now somewhat old-fashioned expressions suggesting that there is no possible alternative to doing something. CAN BUT is equivalent to CAN ONLY: We can but do our best. CANNOT BUT is the equivalent of CANNOT HELP BUT: We cannot but protest against these injustices. See also cannot, help.canned|canning|cans|could/kan/, n., v., canned, canning.n.1. a sealed container for food, beverages, etc., as of aluminum, sheet iron coated with tin, or other metal: a can of soup. 2. a receptacle for garbage, ashes, etc.: a trash can. 3. a bucket, pail, or other container for holding or carrying liquids: water can. 4. a drinking cup; tankard. 5. a metal or plastic container for holding film on cores or reels. 6. Slang. (usually vulgar). toilet; bathroom. 7. Slang. jail: He's been in the can for a week. 8. Slang. (sometimes vulgar). buttocks. 9. Mil. Slang. a depth charge. a destroyer. 10. carry the can, Brit. and Canadian Slang. to take the responsibility. 11. in the can, recorded on film; completed: The movie is in the can and ready for release. v.t.12. to preserve by sealing in a can, jar, etc. 13. Slang. to dismiss; fire. 14. Slang. to throw (something) away. 15. Slang. to put a stop to: Can that noise! 16. to record, as on film or tape. [bef. 1000; ME, OE canne, c. G Kanne, ON kanna, all perh. < WGmc; cf. LL canna small vessel], /kood/; unstressed /keuhd/, v.1. a pt. of can1. auxiliary verb.2. (used to express possibility): I wonder who that could be at the door. That couldn't be true. 3. (used to express conditional possibility or ability): You could do it if you tried. 4. (used in making polite requests): Could you open the door for me, please? 5. (used in asking for permission): Could I borrow your pen? 6. (used in offering suggestions or advice): You could write and ask for more information. You could at least have called me..
verb.1. to be able to; have the ability, power, or skill to: She can solve the problem easily, I'm sure. 2. to know how to: He can play chess, although he's not particularly good at it. 3. to have the power or means to: A dictator can impose his will on the people. 4. to have the right or qualifications to: He can change whatever he wishes in the script. 5. may; have permission to: Can I speak to you for a moment? 6. to have the possibility: A coin can land on either side. v.t., v.i.7. Obs. to know. [bef. 900; ME, OE, pres. ind. sing. 1st, 3rd person of cunnan to know, know how; c. G, ON, Goth kann; see KEN, KNOW]Usage. CAN1 and MAY1 are frequently but not always interchangeable in senses indicating possibility: A power failure can (or may) occur at any time. Despite the insistence by some, that CAN means only "to be able" and MAY means "to be permitted," both are regularly used in seeking or granting permission: Can (or May) I borrow your tape recorder? You can (or may) use it tomorrow.Sentences using CAN occur chiefly in spoken English. MAY in this sense occurs more frequently in formal contexts: May I address the court, Your Honor? In negative constructions, CAN'T or CANNOT is more common than MAY NOT: You can't have it today. I need it myself. The contraction MAYN'T is rare.CAN BUT and CANNOT BUT are formal and now somewhat old-fashioned expressions suggesting that there is no possible alternative to doing something. CAN BUT is equivalent to CAN ONLY: We can but do our best. CANNOT BUT is the equivalent of CANNOT HELP BUT: We cannot but protest against these injustices. See also cannot, help.canned|canning|cans|could/kan/, n., v., canned, canning.n.1. a sealed container for food, beverages, etc., as of aluminum, sheet iron coated with tin, or other metal: a can of soup. 2. a receptacle for garbage, ashes, etc.: a trash can. 3. a bucket, pail, or other container for holding or carrying liquids: water can. 4. a drinking cup; tankard. 5. a metal or plastic container for holding film on cores or reels. 6. Slang. (usually vulgar). toilet; bathroom. 7. Slang. jail: He's been in the can for a week. 8. Slang. (sometimes vulgar). buttocks. 9. Mil. Slang. a depth charge. a destroyer. 10. carry the can, Brit. and Canadian Slang. to take the responsibility. 11. in the can, recorded on film; completed: The movie is in the can and ready for release. v.t.12. to preserve by sealing in a can, jar, etc. 13. Slang. to dismiss; fire. 14. Slang. to throw (something) away. 15. Slang. to put a stop to: Can that noise! 16. to record, as on film or tape. [bef. 1000; ME, OE canne, c. G Kanne, ON kanna, all perh. < WGmc; cf. LL canna small vessel], /kood/; unstressed /keuhd/, v.1. a pt. of can1. auxiliary verb.2. (used to express possibility): I wonder who that could be at the door. That couldn't be true. 3. (used to express conditional possibility or ability): You could do it if you tried. 4. (used in making polite requests): Could you open the door for me, please? 5. (used in asking for permission): Could I borrow your pen? 6. (used in offering suggestions or advice): You could write and ask for more information. You could at least have called me.. 
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121. Gone are the days when a big nation could lord it over small ones.
122. The doctor was able to treat the disease although he could not lay his finger on the exact cause.
123. He could also learn to use the vacuum cleaner, the washing machine and other household appliances.
124. He could make trouble for me if he wanted to.
125. When I got up to him,I could see that he was one of my friends after all.
126. Creditors could obtain a writ for the arrest of their debtors.
127. Could you give me a bed for the night ?
128. You make me happier than I ever thought I could be. And if you'll let me, I will spend the rest of my life trying to make you feel the same way.
129. The dentist could detect no sign of decay in her teeth.
130. The kindest friend there could ever be is the kind of friend you are to me.Happy Birthday!
131. Jack was not so much interested in making money,(www.Sentencedict.com) so long as he could manage to rub along.
132. We would do anything to ease your sorrow if we only could.
133. They made the big mistake of thinking they could seize its border with a relatively small force.
134. He hesitated and asked me if he could sit near me.
135. Historically there was no letter " l " in the word " could " ; it was inserted by analogy with " would ".
136. We could hear the lions roaring at the other end of the zoo.
137. In our room we could hear the murmur of a distant brook.
138. Could you clarify the first point please? I don't understand it completely.
139. We could just hear the distant wail of a siren.
140. The lights changed to red before I could get across.
141. You know[sentencedict.com], it occurs to me you could solve all your problems by obtaining more money.
142. We could walk uptown or we could take the train.
143. If the weather's nice we could have a picnic in the park.
144. She could hear the thud of her own heartbeat sounding heavily in her ears.
145. Anyone who betrayed the cult could be punished by death.
146. I didn't think that I could ever trust happiness. Then I met you.
147. We will miss him as a worker amongst us and also as a cheerful friend who could always brighten the day around here.
148. Before the hunter could take aim , the deer jumped out of sight.
149. I could hardly believe my luck when he said yes.
150. The flimsy structure of the vehicle could not withstand even mild impacts.
More similar words: would, should, heart and soul, coup, court, course, couch, cousin, county, couple, country, of course, counter, council, account, count out, count on, discount, courtroom, encourage, discourse, discourage, counselor, courageous, account for, a couple of, encouraging, in due course, accounting, discouraged.