Translation guide
The English word "threadbare" has two main uses: describing worn-out fabric, and describing an argument, excuse, or idea that is weak and unconvincing. Japanese uses different expressions for each.
Describing clothing, carpets, or fabric that is so old or overused that the threads are visible or it is about to tear.
The most common and natural way to say threadbare for fabric. Literally 'worn through by rubbing'. Used for clothes, towels, carpets, etc.
Describing an argument, excuse, story, or idea that is weak, unconvincing, or overused to the point of being ineffective.
Avoid directly translating 'threadbare' as '糸がむき出しの' (threads exposed) or similar literal phrases. They sound unnatural in Japanese. Use the expressions above depending on context.
His jacket was threadbare and had holes in it.
Specifically for clothing that has become threadbare from being worn many times. Emphasizes long use.
It's a threadbare sweater, but it's still warm.
Means worn down or worn thin, often for soles of shoes or carpets. Can be used for fabric that has become thin.
We replaced the threadbare carpet.
Literally 'the fabric has become thin'. A more descriptive phrase, less idiomatic but clear.
This shirt is so threadbare you can see through it.
His excuse was threadbare.
Literally 'full of holes'. Used for arguments or stories that have many flaws or inconsistencies.
That theory is threadbare.
Means 'worn-out from overuse', similar to a cliché. Used for ideas or expressions that have become stale.
His jokes are always threadbare.
Means 'thin, flimsy, shallow'. Can describe an excuse or argument that lacks substance.
Such a threadbare excuse won't work.