UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ˈsɪgnɪfaɪ/US:USA pronunciation: IPA and respellingUSA pronuncation: IPA/ˈsɪgnəˌfaɪ/ ,USA pronunciation: respelling(signə fī′)

Inflections of 'signify' (v): (⇒ conjugate)
v 3rd person singular

WordReference Random House Learner's Dictionary of American English © 2020
sig•ni•fy /ˈsɪgnəˌfaɪ/USA pronunciation   v. [+ object], -fied, -fy•ing. 
  1. to make known:All those in favor, please signify your agreement by saying "Aye.''
  2. to be a sign of; have the meaning of:A sign showing a cigarette inside a red circle with a red line through it signifies "No smoking.''
sig•ni•fi•ca•tion /ˌsɪgnəfɪˈkeɪʃən/USA pronunciation  n. [uncountable]See -sign-.

WordReference Random House Unabridged Dictionary of American English © 2020
sig•ni•fy  (signə fī′),USA pronunciation v.,  -fied, -fy•ing. 
  1. to make known by signs, speech, or action.
  2. to be a sign of;

  1. to be of importance or consequence.
signi•fi′a•ble, adj. 
  • Old French signifier
  • Middle English signifien 1200–50
    • 1.See corresponding entry in Unabridged signal, express, indicate.
    • 2.See corresponding entry in Unabridged represent, indicate, denote, betoken, imply.

Collins Concise English Dictionary © HarperCollins Publishers::
signify /ˈsɪɡnɪˌfaɪ/ vb ( -fies, -fying, -fied)(when tr, may take a clause as object)
  1. (transitive) to indicate, show, or suggest
  2. (transitive) to imply or portend: the clouds signified the coming storm
  3. (transitive) to stand as a symbol, sign, etc (for)
  4. (intransitive) informal to be significant or important
Etymology: 13th Century: from Old French signifier, from Latin significāre, from signum a sign, mark + facere to make

ˈsigniˌfier n
'signify' also found in these entries (note: many are not synonyms or translations):
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