significantly

adverb

sig-NIF-i-kuhnt-lee/sɪɡˈnɪfɪkəntli/

2 meanings of significantly

1
adverb
In a meaningful or notable manner, or to a large and important degree.
The new policy significantly reduced traffic in the city center.
He paused significantly before answering, and everyone leaned in.
UsageUsually before a comparative or verb of change: significantly higher, significantly improved. More significantly, opening a clause, flags a weightier point.
Similarconsiderably, substantially, markedly, notably, meaningfully
Oppositeslightly, marginally, negligibly
2
adverb
In statistics, in a way that a statistical test shows is unlikely to be the result of chance alone.
Patients on the new drug recovered significantly faster than those given a placebo (p < 0.01).
Once family income was controlled for, test scores did not differ significantly between the two districts.

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Formed from "significant" combined with the suffix "-ly".

Checked 7 Nov 2026 · 1 fact

“Significantly” is formed from “significant” and the suffix “-ly”. en.wiktionary.org