Select the most appropriate meaning of the given Idiom:- "To Pent-up"

Suppressed feelings and emotions

The most appropriate meaning of the idiom "to pent-up" is suppressed feelings and emotions. The idiom comes from the literal meaning of something being pent up, which is to be held back or restrained. In the same way, when someone says that they are "pent-up," they are saying that they are feeling a lot of emotions that they are not expressing.

The other options are not as accurate. To gear up for an important task means to prepare for an important task. Five sides of a figure means a figure with five sides. To lighten up means to become less serious or to relax. None of these meanings are the same as "suppressed feelings and emotions."