sig‧nif‧i‧cant‧ly S3 W2
in an important way or to an important degree:
Health problems can be significantly reduced by careful diet.
Methods used by younger teachers differ significantly from those used by older ones.
significantly better/greater/worse etc
Delia's work has been significantly better this year.
2 [sentence adverb]
used to say that something is very important:
The Democrats, significantly, finished well behind the Green Party.
in a way that seems to have a special meaning:
George paused, and glanced significantly in my direction.