against the grain

/əˈɡɛnst ðə ɡɹeɪn/prep_phrase
Graduate
1

Preventing a smooth, level surface from being formed by raising the nap of the wood or causing larger splinters to form ahead of the cutting tool below the cutting surface.

2

Contrary to what is expected; especially, of behavior different from what society expects.

3

Unwillingly, reluctantly; contrary to one's nature.

4

Used other than figuratively or idiomatically: see against, the, grain.