tired vs threadbare

tired and threadbare both are adjectives.

Word	Noun	Adjective	Verb	Adverb
tired	No	Yes	No	No
threadbare	No	Yes	No	No

As adjectives, tired and threadbare are synonyms defined as:

Other synonyms of tired include banal, commonplace, hackneyed, old-hat, shopworn, stock, timeworn, trite, well-worn.

tired (adjective)	threadbare (adjective)
depleted of strength or energy	repeated too often; overfamiliar through overuse
repeated too often; overfamiliar through overuse	having the nap worn away so that the threads show through