Explanation
Used to criticize someone for doing something contrary to what one would expect from their nature or situation.
Formation
Verb (casual) + くせに / い-Adjective + くせに / な-Adjective + な(or の) + くせに / Noun + の + くせに
Detailed explanation
The grammar point ～くせに is used to express criticism or disapproval toward someone who does something contradictory to their expected nature, role, or prior statement. It's used in fairly casual or spoken contexts and can sound quite critical or accusing. Note that there's a colloquial variant ～くせして, but ～くせに is the standard form taught in most references.
Examples
Kare wa itsumo chikoku shite kuru kuse ni, jibun ga matasareru no ga kirai da.
He’s always late, yet he hates being kept waiting.
Warui na to itteru kuse ni, mata onaji koto o kurikaeshite iru.
He says he's sorry, yet he keeps doing the same thing.
Kare wa se ga takai kuse ni, basuke ga heta da.
Despite being tall, he's bad at basketball.
Kono mise wa yuumei na no kuse ni, saabisu ga warui.
Despite being famous, this store has poor service.
Practice
Grammar content sourced from hanabira.org.