Answer: loosener

AnswerCrossword Clue
LOOSENER

WD-40, for example

LOOSENER

Screwdriver, sometimes

LOOSENER

One who twists a nut counterclockwise

LOOSENER
Wrench, sometimes
LOOSENER
That which releases.
LOOSENERRelaxer.
LOOSENERScrewdriver, at times
LOOSENERWrench, at times