膨ふくらます

godan verb (-su), transitive verb

swell; expand; inflate; bulge

Transitive verb: to cause something to swell, expand, or bulge. Used for physical objects (balloons, bags, cheeks) and abstract things (budgets, expectations, dreams).

• 風ふう船せんを膨ふくらます。

  I blow up a balloon.

• 彼かれは夢ゆめ