simple past tense and past participle of unscrew

Not having been screwed.

(transitive) To loosen a screw or thing by turning it.

Third-person singular simple present indicative form of unscrew

present participle of unscrew

The act by which something is unscrewed.

That can be unscrewed.

That cannot be screwed.

One who, or that which, unscrews; a device for unscrewing.

plural of unscrewer