important; of consequence.

having or expressing a meaning; indicative; suggestive

a significant wink.

Statistics . of or pertaining to observations that are unlikely to occur by chance and that therefore indicate a systematic cause.

something significant; a sign.

adjective

insignificant , meaningless , unimportant , minor , trivial

adjective

cogent , compelling , convincing , denoting , eloquent , expressing , expressive , facund , forceful , heavy , important , indicative , knowing , meaning , momentous , powerful , pregnant , representative , rich , sententious , serious , sound , suggestive , symbolic , valid , weighty , big , carrying a lot of weight , consequential , considerable , material , meaningful , notable , noteworthy , substantial , vital , historic , large , monumental , critical , decisive , great , key , main , major , prominent , significative , telling