Letters that make pent-up
e, n, p, t, u are letters that make 'pent-up'
1 possible definitions for 'pent-up'
Under this definition, pent-up is an adjective and has the following properties:
repressed has the same meaning as pent-up
inhibited is similar to pent-up.
"her severe upbringing had left her inhibited", "a very inhibited young man, anxious and ill at ease", "their reactions were partly the product of pent-up emotions", "repressed rage turned his face scarlet"