the.com/tweak
The smallest possible change, made with the most possible confidence.
means To make a tiny, precise adjustment to something that's mostly already working.
from From the older English 'twick,' meaning to pluck or pinch sharply — the gesture of a finger and thumb nudging something just so. Drag the meaning into software and you get the developer's eternal 'just one more.'
Geek slangIn coding, the tweak that breaks everything is legendary.
Drug sense'Tweaking' also means strung out on stimulants.
Cousin wordRelated to 'twitch' and 'tweezers' — all pinchers.