Synonyms for Happen upon:

• n.

  •attain (noun)
  • attain.
  •bump into (noun)
  • bump.
  •chance on (noun)
  • chance on.
  •chance upon (noun)
  • chance upon.
  •come across (noun)
  • come.
  •come upon (noun)
  • come upon.
  •fall upon (noun)
  • fall upon.

• v.

  •come across (verb)
  • unearth,
  • notice,
  • uncover,
  • stumble upon,
  • hit upon,
  • meet,
  • discover,
  • bump into,
  • light upon.
  •find (verb)
  • detect,
  • spot,
  • observe,
  • bring to light,
  • come up with,
  • pinpoint,
  • collar,
  • espy,
  • make out,
  • identify,
  • ferret out,
  • recognize,
  • corral,
  • distinguish,
  • descry,
  • perceive,
  • turn up,
  • encounter,
  • sight,
  • expose,
  • discern.
  •guess (verb)
  • deem,
  • venture,
  • presume,
  • reckon,
  • select,
  • pick,
  • speculate,
  • hazard,
  • reason,
  • judge,
  • divine,
  • solve,
  • postulate,
  • suppose,
  • surmise,
  • calculate,
  • theorize,
  • infer,
  • predict,
  • conjecture,
  • suspect,
  • chance,
  • survey,
  • hypothesize,
  • fancy,
  • estimate,
  • pretend,
  • think,
  • deduce,
  • work out,
  • suggest,
  • penetrate,
  • believe.
  •pick up (verb)
  • cull,
  • glean,
  • purchase,
  • compass,
  • take,
  • acquire,
  • procure,
  • learn,
  • score,
  • chalk up,
  • gain,
  • secure,
  • have,
  • annex,
  • gather,
  • garner,
  • get,
  • buy,
  • extract.
  •strike (verb)
  • seize,
  • reach,
  • achieve,
  • catch,
  • effect.

• Other synonyms:

  •come across
  • Unearthing,
  • stumbling upon,
  • happened upon.

Antonyms for Happen upon:

• v.

  • come across
    miss.
  • find
    lose, fail, fall short, misunderstand, neglect, leave, forfeit, avoid, overlook, pass by.
  • guess
    refuse, prove, question, wonder, reject, measure, disbelieve, abstain, ignore.
  • locate
    depart, move, displace.
  • pick up
    lower, pass, release, yield, free, sell, spend, surrender, weaken, throw away, worsen, drop.
  • strike
    let go, tap, give, be immune, pass up, not touch, offer.