"pent-up aggression" is a correct and usable phrase in written English.
You can use it in any situation where you wish to refer to a person's feelings of anger or frustration that have been stored up over a period of time. For example, you could say, "She had been bottling up her emotions for years, so when she finally exploded with pent-up aggression it shocked everyone."
Kyle chalked up these incidents to having "pent-up aggression".
Months of pent-up aggression were suddenly released in a cathartic, chaotic performance.
They said the invitation constituted performance art and served a social purpose by relieving passers-by of pent-up aggression.
They had a lot of anger and pent-up aggression they didn't know what to do with.
I secretly have always wished I played a contact sport and had an outlet for that little bit of pent-up aggression.
In Othello, they're all pepped up for battle in Cyprus and then that all fades away, so where does that energy and pent-up aggression go?
It was virtually deserted but full of artwork by local artists with enough pent up aggression, borne out of years of oppression, to produce some really earthy art.
When the chorus does eventually thunder in (it feels a longer wait than 45 seconds), it's the perfect crystallisation of pent up aggression, newfound freedom and – in the line "I'm so moving on" – a very teenage, radio-friendly way of saying "fuck you".
So if you've got a whole lotta pent up aggression toward your current photo printer, we think it's about time you took a baseball bat to it and replaced it with one of these beauties that churns out extra-delicious-looking pictures using the company's new Claria Hi-Definition six-color, dye-based ink that'll last up to 200 album-kept years and are smudge and scratch resistant.
Use your pent up aggression to write your novel.
As a young adult, it became the stereotypical crutch for all that pent up aggression and competition.
