From Longman Dictionary of Contemporary Englishsignificantsig‧nif‧i‧cant /sɪɡˈnɪfɪkənt/ ●●●S2W1AWL adjective 🔊 🔊 1IMPORTANThaving an important effect or influence, especially on what will happen in the future opp insignificant 🔊 His most significant political achievement was the abolition of the death penalty. 🔊 Please inform us if there are any significant changes in your plans.significant for 🔊 The result is highly significant for the future of the province.it is significant that 🔊 It is significant that the writers of the report were all men.► see thesaurus at important2BIGlarge enough to be noticeable or have noticeable effects opp insignificant 🔊 A significant number of drivers fail to keep to speed limits. 🔊 A significant part of Japan’s wealth is invested in the West. 🔊 There is a significant difference between the number of home births now and ten years ago. 🔊 The rise in temperature is not statistically significant.3MEANINGa significant look, smile etc has a special meaning that is not known to everyone 🔊 He gave me a significant look.