know one's ass from a hole in the ground
idiomTo have an adequate level of knowledge or skill; to understand what one is doing or talking about.
- 01
abound in one's own sense
To follow one’s own inclinations and opinions.
- 02
ace in the hole
Synonym of ace up one's sleeve.
- 03
ace up one's sleeve
A surprise advantage of which others are not aware.
- 04
act one's age
To behave in a manner appropriate to one's age.
- 05
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”).
- 06
afraid of one's own shadow
Exceptionally timid.
- 07
air one's dirty laundry in public
To reveal one's sordid secrets to the public.
- 08
air one's dirty linen in public
Synonym of air one's dirty laundry in public.