ふくfukuらむramu
1.

To increase in size or volume as a result of internal pressure, often resulting in a rounded or bulging shape, as seen in objects like balloons or buds preparing to bloom.

2.

To progress beyond initial expectations or projections, especially in contexts such as financial forecasts or dreams, indicating a growth in scope or ambition.

3.

To gain prominence or intensity, often used in reference to emotions or ideas that develop and become more significant over time.

Example:

一陣の風をうけて帆がふくらんだ。