know stuff



know one's stuff

 and know one's onions
to know what one is expected to know. I know my stuff. I can do my job. She can't handle the assignment. She doesn't know her onions.
See also: know, stuff

know your stuff

to know a lot about a subject or be an expert at doing something When it comes to restoring grand pianos, he really knows his stuff.
See also: know, stuff

know your stuff

  (informal)
to know a lot about a subject, or to be very good at doing something When it comes to restoring grand pianos, Mr Morley really knows his stuff.
See also: know, stuff

Common Names:

NameGenderPronouncedUsage
Benediktas-Lithuanian
JÉRÔMezhe-ROMFrench
MÉLanie-French
DeanDEENEnglish
Shiva (2)-Persian
Akantha-Greek Mythology