skin-deep

figuratively not-comparable

(figuratively) Shallow, superficial.

Japanese Meaning

表面的な・浅薄な

Her concern for social causes was not merely skin-deep; she volunteered every weekend and donated regularly.

彼女の社会問題への関心は単なる表面的なものではなく、毎週末ボランティアをし、定期的に寄付もしていた。

Sense（1）

(figuratively) Shallow, superficial.