Tongue-in-cheek and Unctuousness

Tongue-in-cheek adjective - Cleverly amusing in tone.

Unctuousness and tongue-in-cheek are semantically related. In some cases you can use "Unctuousness" instead a noun phrase "Tongue-in-cheek".

Unctuousness noun - Smug self-serving earnestness.

Tongue-in-cheek and unctuousness are semantically related. Sometimes you can replace phrase "Tongue-in-cheek" with "Unctuousness", this terms are similar.