Find Antonyms
lock Antonyms
Opposite of lock
Because the opposite of lock shifts with each meaning, the 13 antonyms and opposite words below are separated across 3 exact definitions and ranked by contrast strength.
• verb (Context 1)
To fasten or secure something (such as a door, window, or container) with a mechanical or electronic locking device.
Usage Example
"Please remember to unlock the front door and arm the security system before you leave."
Strongest
unlock
unbolt
Strong
unlatch
unfasten
open
• verb (Context 2)
To become firmly fixed, jammed, or incapable of moving.
Usage Example
"The gears on my older bicycle tend to disengage if I try to shift them too rapidly on a steep hill."
Strong
disengage
release
loosen
• verb (Context 3)
To interlock, clasp, or entangle firmly together.
Usage Example
"The peaceful protesters locked arms to form an unbreakable human chain across the entrance."
Strongest
unlink
unclasp
Strong
separate
disentangle
part
Similar words to lock
Words similar to lock shift depending on context. Common synonyms include:
interlock
tress
jam
link
bolt
seize up
seize
lock up
Cite this Entry
Wordmom. (2026). Antonyms for Lock. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/antonyms/lock