The phrase "longish hair" means hair that is somewhat long, but not extremely long.
Sentences with «longish hair»
I've tried many dating sites nothing ever really hits, some information about me is im a big dude with a beard and as of right now longish hair. (animeloversdating.com)
I have longish hair, and I had a guy tell me last week that according to what Paul wrote in 1 Corinthians, my hair was an abomination to God. (redeeminggod.com)
He remembers knocking on the door of an older neighbor who had longish hair. (si.com)