Synonym: acquire, advance, benefit, come along, earn, get, improve, look up, make progress, obtain, pick up, receive, secure. Antonym: lose. Similar words: again, regain, against, ungainly, all over again, fight against, struggle against, maintain. Meaning: [geɪn] 
n. 1. a quantity that is added 2. the advantageous quality of being beneficial 3. the amount of increase in signal power or voltage or current expressed as the ratio of output to input 4. the amount by which the revenue of a business exceeds its cost of operating. v. 1. obtain 2. win something through one's efforts 3. derive a benefit from 4. reach a destination, either real or abstract 5. obtain advantages, such as points, etc. 6. rise in rate or price 7. increase in 8. earn on some commercial or business transaction; earn as salary or wages 9. increase (one's body weight).
n. 1. a quantity that is added 2. the advantageous quality of being beneficial 3. the amount of increase in signal power or voltage or current expressed as the ratio of output to input 4. the amount by which the revenue of a business exceeds its cost of operating. v. 1. obtain 2. win something through one's efforts 3. derive a benefit from 4. reach a destination, either real or abstract 5. obtain advantages, such as points, etc. 6. rise in rate or price 7. increase in 8. earn on some commercial or business transaction; earn as salary or wages 9. increase (one's body weight). 
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121. I take strong exception to your suggestion that this action was done for financial gain.
122. We are hoping to gain a better understanding of the underlying process.
123. She's by no means really mad; she puts it on in order to gain attention.
124. Alternative medicine has only just started to gain respectability in our society.
125. That sort of gain for Labour is nothing like good enough to win them the general election. Sentencedict.com
126. It is impossible for a small company to gain on the big firms while business is so inactive.
127. Having deducted costs we still made a net gain of five thousand pounds.
128. This policy may appeal to the party faithful, but will it gain the support of uncommitted voters?
129. The company is trying to gain a foothold in the European market.
130. The course helped me to gain a deeper appreciation of what scientific research involves.
131. The minister was sacked for abusing power for his personal gain.
132. It takes years to work your way through the examination system until you gain a degree.
133. Today the media drive athletes to the view that the important thing is to gain worldly success.
134. They were thwarted in their attempt to gain overall control of the company.
135. It is helpful for family members to gain a basic understanding of the illness.
136. You can't gain access to the computer system without entering your password.
137. The police managed to gain access through an upstairs window.
138. To gain a complete mastery of English, one must study very hard.
139. It is sad that a major company should try to gain from other people's suffering.
140. This enabled European banks to gain entry into new markets.
141. He predicts that his party will gain at least 12 seats .
142. They tried to gain time by spinning out the negotiation.
143. We're going to have to work very hard, but as Chris so succinctly put it, there's no gain without pain.
144. The management group would stand to gain millions of dollars if the company were sold.
145. Radical, militant factions want to continue using the hostages as a lever to gain concessions from the west.
146. Through superior production techniques they were able to gain the competitive edge.
147. Some people will gain weight, no matter how hard they try to slim.
148. The climber tried to gain a purchase with his foot on a narrow edge of rock.
149. What you gain on the swings you may lose on the roundabouts.
150. The two racing drivers fenced for a chance to gain the lead.