hackneyed vs threadbare

hackneyed and threadbare both are adjectives.

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

As adjectives, hackneyed and threadbare are synonyms defined as:

hackneyed and threadbare: repeated too often; overfamiliar through overuse

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

hackneyed (adjective)	threadbare (adjective)
repeated too often; overfamiliar through overuse	repeated too often; overfamiliar through overuse
	having the nap worn away so that the threads show through