Similar words: come upon, thereupon, look upon, frown upon, enter upon, once upon a time, make up one's mind, stupor. Meaning: [əˈpɒn] 
prep.1. up and on; upward so as to get or be on: He climbed upon his horse and rode off. 2. in an elevated position on: There is a television antenna upon every house in the neighborhood. 3. in or into complete or approximate contact with, as an attacker or an important or pressing occasion: The enemy was upon us and our soldiers had little time to escape. The Christmas holiday will soon be upon us and we have hardly begun to buy gifts. The time to take action is upon us. 4. immediately or very soon after: She went into mourning upon her husband's death. 5. on the occasion of: She was joyful upon seeing her child take his first steps. 6. on (in any of various senses, used as an equivalent of on with no added idea of ascent or elevation, and preferred in certain cases only for euphonic or metrical reasons): He swore upon his honor as a gentleman..
prep.1. up and on; upward so as to get or be on: He climbed upon his horse and rode off. 2. in an elevated position on: There is a television antenna upon every house in the neighborhood. 3. in or into complete or approximate contact with, as an attacker or an important or pressing occasion: The enemy was upon us and our soldiers had little time to escape. The Christmas holiday will soon be upon us and we have hardly begun to buy gifts. The time to take action is upon us. 4. immediately or very soon after: She went into mourning upon her husband's death. 5. on the occasion of: She was joyful upon seeing her child take his first steps. 6. on (in any of various senses, used as an equivalent of on with no added idea of ascent or elevation, and preferred in certain cases only for euphonic or metrical reasons): He swore upon his honor as a gentleman.. 
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(31) Please accept my hearty congratulations upon your marriage.
(32) It is useless to muse upon past errors.
(33) I look upon this as an absolute necessity.
(34) The child curled upon the sofa.
(35) The islands' economy is largely dependent upon tourism.
(36) Once upon a time there was a princess ...
(37) We trained our cannon upon the fort.
(38) The dress is patterned upon a Paris model.
(39) He is cogitating upon some means of revenge.
(40) She avenged her mother's death upon the Nazi soldiers.
(41) The village stands upon a hill.
(42) They were told to shoot enemies upon sight.
(43) The sheep battened upon the herbage.
(44) He was fully bent upon the project.
(45) Further investment is contingent upon the company's profit performance.
(46) Don't bear hard upon the pencil, it will break.
(47) She gazed upon him in bewilderment.
(48) By telling lies he brought discredit upon Parliament.
(49) He descanted endlessly upon the wonders of his trip. Sentencedict.com
(50) He was set upon by a vicious dog.
(51) Upon his retirement, the business devolved on his son.
(52) Our success is contingent upon your continued help.
(53) I look upon this as my home.
(54) The crown was placed upon the new monarch's head.
(55) Heavy household chores made inroads upon Jane's health.
(56) The day is breaking upon.
(57) He was looked down upon because of his egoism.
(58) At night I started off upon my journey.
(59) The bridge bore upon ten piers.
(60) The government has embarked upon a programme of reforms.
More similar words: come upon, thereupon, look upon, frown upon, enter upon, once upon a time, make up one's mind, stupor, made up of, be made up of, pony, pond, weapon, ponder, keep on, sponsor, postpone, opponent, respond, component, sponge off, response, postponed, proponent, ponderous, correspond, respondent, despondent, responsive, spontaneous.