膨らます

ふくらます

to swell, to expand, to inflate, to bulge

JLPT N2

Details

Part of Speech:
Godan verb with 'su' ending, Transitive verb
Romaji:
fukuramasu

Example Sentences

風船を膨らますと、空気が入って重くなる。

When you inflate a balloon, air enters and it gets heavy.