He keeps to himself and does his own time.
do one's own time
idiomTo serve a prison sentence without becoming involved in any illicit dealings or prison gangs.
The veteran inmate advised the newcomer to stay out of trouble and just do his own time.
Despite the volatile atmosphere within the cell block, he maintained a quiet discipline and focused solely on doing his own time.
- 01
a week is a long time in politics
In politics, much change can occur in a short space of time.
- 02
abound in one's own sense
To follow one’s own inclinations and opinions.
- 03
about time
Far past the desired time.
- 04
ace up one's sleeve
A surprise advantage of which others are not aware.
- 05
act one's age
To behave in a manner appropriate to one's age.
- 06
act one's age, not one's shoe size
Synonym of act one's age (“to behave in a mature manner; to avoid being childish”).
- 07
afraid of one's own shadow
Exceptionally timid.
- 08
air one's dirty laundry in public
To reveal one's sordid secrets to the public.
Last updated July 12, 2026