- having or expressing a meaning; indicative
- having a covert or implied meaning; suggestive
- important, notable, or momentous
- of or relating to a difference between a result derived from a hypothesis and its observed value that is too large to be attributed to chance and that therefore tends to refute the hypothesis
WordReference Random House Learner's Dictionary of American English © 2026
sig•nif•i•cant /sɪgˈnɪfɪkənt/USA pronunciation
adj.
WordReference Random House Unabridged Dictionary of American English © 2026- important;
of consequence:a significant event in world history. - having a special, secret, or disguised meaning:She gave him a significant wink.
sig•nif•i•cant
(sig nif′i kənt),USA pronunciation adj.
n.
sig•nif′i•cant•ly, adv.
- important;
of consequence. - having or expressing a meaning;
indicative;
suggestive:a significant wink. - Statisticsof or pertaining to observations that are unlikely to occur by chance and that therefore indicate a systematic cause.
n.
- something significant;
a sign.
- Latin significant- (stem of significāns), present participle of significāre to signify; see -ant
- 1570–80
- 1. consequential, momentous, weighty. 2. See expressive.
Collins Concise English Dictionary © HarperCollins Publishers::
significant /sɪɡˈnɪfɪkənt/ adj
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'significant' also found in these entries (note: many are not synonyms or translations):
accurate
- appurtenance
- Bradstreet
- break through
- butterfly effect
- card
- China
- closure
- cock
- combustion
- consequential
- cult
- decimal place
- difference
- emphasis
- enharmonic
- eponym
- equivalent
- expressive
- festival
- floating-point representation
- great
- historic
- import
- major
- materially
- max
- measurable
- milestone
- name
- nothing
- odds
- operative
- outweigh
- proletariat
- rather
- relate
- scene
- shock
- sign
- significance
- significant figures
- significant other
- signify
- significative
- speak
- spirit
- stakeholder
- taper
- accessory fruit
