Verbs

(v)fasten, fix, securecause to be firmly attached“fasten the lock onto the door”, “she fixed her gaze on the man”
(v)fastenbecome fixed or fastened“This dress fastens in the back”
(v)fastenattach to“They fastened various nicknames to each other”
(v)tighten, fastenmake tight or tighter“Tighten the wire”