Hard core and Improper

Hard core noun - The most dedicated and intensely loyal nucleus of a group or movement.

Improper and hard core are semantically related. in rude topic. In some cases you can use "Improper" instead an adjective phrase "Hard core", when it comes to topics like lewd. vulgar substitute

Improper adjective - Not appropriate for a particular occasion or situation.

Hard core and improper are semantically related. Sometimes you can replace phrase "Hard core" with "Improper", this terms are similar.

Nearby Word: improperly