haphazard
Definitions
adj
Random; chaotic; incomplete; not thorough, constant, or consistent.
Do not make such haphazard changes to the settings; instead, adjust the knobs carefully, a bit at a time.
The haphazard efforts of a few, working here and there without concert, easily spent themselves in attaining results far short of what were needed.
noun
Simple chance, a random accident, luck.
You should never talk about your own fingers, and haphazards, to genteel people. You should only talk about agreeable subjects as I do.
I consulted my mother, who was punctiliousness itself, and decided I must go Monday, as agreed. I should be with her again on Wednesday. On such haphazards hang men's destinies sometimes.
adv
Haphazardly.
"[...] I suspect that it mostly happens haphazard, though afterwards various noble reasons are invented. About marriage I am cynical.”