lame

[change] Adjective

Positive
lame

Comparative
lamer

Superlative
lamest

(often offensive) Not able to walk well because of a problem with one's feet or legs.

Because I broke my leg and it's in a cast, I'm going to be lame for a while.
(slang) Not convincing or believable.

He had a really lame excuse for missing the birthday party.
(slang) Not cool, funny, interesting, fun, or relevant.

He kept telling these lame jokes all night.

That party was lame, so we ditched it.