From Middle English upon, uppon, uppen, from Old English upon, uppon, uppan ("on, upon, up to, against, after, in addition to"), equivalent to .

• (RP) IPA: /əˈpɒn/
• (America) IPA: /əˈpɑn/, /əˈpɔn/

1. A higher-register or more formal alternative to on in most, though not all, prepositional uses.

   A vase of flowers stood upon the table. — The painting hangs upon the wall. — All of the responsibility is upon him. — She plays upon a violin (or piano). — The lighthouse that you can see is upon the mainland. — He rested upon his elbows. — Tug upon the rope; push hard upon the door! — I stubbed my toe upon an old tree stump. — He wore old shoes upon his feet. — Born upon the 4th of July. — I have no opinion upon this subject. — They proceeded to arrest someone upon suspicion of bribery. — Upon Jack's entry, William got up to leave. — Before we knew it, the forest was upon us, and the air grew colder and damper. — What will be the effect upon morale? — Have pity or compassion upon him. — They lived upon ten dollars a week. — We ate heaps upon heaps of food. — I depended upon them for assistance. — He affirmed or promised upon his word. — Upon my life, I am innocent. — A curse upon him!

   • c. 1596–1598 (date written), William Shakespeare, “The Merchant of Venice”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, →OCLC ↗, [Act III, scene i]:

     No news of them? Why, so: and I know not what's spend in the search: why thou loss upon loss! the thief gone with so much, and so much to find the thief; and no satisfaction, no revenge: nor no ill luck stirring but what lights on my shoulders; no sighs but of my breathing; no tears but of my shedding.

   • 1897 December (indicated as 1898), Winston Churchill, chapter V, in The Celebrity: An Episode, New York, N.Y.: The Macmillan Company; London: Macmillan & Co., Ltd., →OCLC ↗:

     Although the Celebrity was almost impervious to sarcasm, he was now beginning to exhibit visible signs of uneasiness, the consciousness dawning upon him that his eccentricity was not receiving the ovation it merited.

   • 1914 November, Louis Joseph Vance, “An Outsider […]”, in Munsey's Magazine, volume LIII, number II, New York, N.Y.: The Frank A[ndrew] Munsey Company, […], published 1915, →OCLC ↗, chapter I (Anarchy), page 373 ↗, column 2:

     Little disappointed, then, she turned attention to "Chat of the Social World," gossip which exercised potent fascination upon the girl's intelligence.