- The definition of pent-up is something that builds up and isn't expressed or released.
An example of pent-up is when you don't cry when you are sad.
held in check; curbed; confined: pent-up emotion
Not given expression; repressed: pent-up emotions.
(comparative more pent-up, superlative most pent-up)
- not expressed
- repressed or suppressed, especially of emotions or impulses
- He punched his pillow and screamed at the top of his lungs about all the pent-up frustrations from the day.