There is a wonderful old Indian tale about three blind men who come upon an elephant and ask, "What is this?"
How did you first come upon that cocktail for writing success, and has the routine evolved over your career?
Dorothy Parker thought "It will be many a day before I come upon a book anywhere near as brilliant as The Ginger Man."
Tony had come upon her on May 8, 1945, the day of the German surrender.
Finally, I come upon Mary, 34, a passionate fan of One Tree Hill and Vampire Diaries.
Summer had come upon Vitry-sur-Marne and parched it to the bone.
But now, as if we had not troubles enough, a new one has come upon us.
When he wanted to send a parcel to Miss Jason, he told her brother he should come upon him for the postage.
I am older now, but the hour of disenchantment has not yet come upon me—nor ever will.
He had come upon a possible means of exit, for, apparently, the cave had two openings.
Old English cuman "come, approach, land; come to oneself, recover; arrive; assemble" (class IV strong verb; past tense cuom, com, past participle cumen), from Proto-Germanic *kwem- (cf. Old Saxon cuman, Old Frisian kuma, Middle Dutch comen, Dutch komen, Old High German queman, German kommen, Old Norse koma, Gothic qiman), from PIE root *gwa-, *gwem- "to go, come" (cf. Sanskrit gamati "he goes," Avestan jamaiti "goes," Tocharian kakmu "come," Lithuanian gemu "to be born," Greek bainein "to go, walk, step," Latin venire "to come").
The substitution of Middle English -o- for Old English -u- before -m-, -n-, or -r- was a scribal habit before minims to avoid misreading the letters in the old style handwriting, which jammed letters. The practice similarly transformed some, monk, tongue, worm. Modern past tense form came is Middle English, probably from Old Norse kvam, replacing Old English cuom.
Remarkably productive with prepositions (NTC's "Dictionary of Phrasal Verbs" lists 198 combinations); consider the varied senses in come to "regain consciousness," come over "possess" (as an emotion), come at "attack," come on (interj.) "be serious," and come off "occur." For sexual senses, see cum.