unloosens
Makes less tight
Unloosens means releases or sets free—the same as loosens.
The prefix un- here intensifies rather than reverses, making unloosen and loosen synonyms.
The word appears occasionally in literary or emphatic contexts: He unloosens his grip on the rope.
Most speakers find it redundant and prefer loosen.
Without payment or restriction
- unshackleRemove bonds from
- unfetterRemove restraints from
- unchainRemove restraining links
- emancipateGrant freedom to
unleash · unbridle · extricate · disentangle · rescue · deliver · unburden · uncage
Release from attachment
- detachTo separate from
- unhookRelease from a curved fastener
- unclaspOpen a hinged fastener
- unboltSlide a bar open
unlatch · unclip · unhitch · disengage · unscrew · unzip · uncork · unpin
free
Without payment or restriction
emancipate · unleash · unbridle · extricate · disentangle · rescue · deliver · unburden · uncage · untrap
unfasten
Release from attachment
unbolt · unlatch · unclip · unhitch · disengage · unscrew · unzip · uncork · unpin · unbuckle
knot
Tied rope fastening
lace · cord · strap · ribbon · binding · string · twine · thread · unlace · unstrap
tension
Stretched or strained state
grasp · tightness · clenched · stiffness · ease · slacken · soften · let go · unclench · decompress