Ill-bred and Rock-bottom

Ill-bred adjective - Lacking in refinement or good taste.

Rock-bottom and ill-bred are semantically related. In some cases you can use "Rock-bottom" instead an adjective phrase "Ill-bred".

Rock-bottom adjective - Of, relating to, or located at the bottom.

Ill-bred and rock-bottom are semantically related. Sometimes you can use "Ill-bred" instead an adjective phrase "Rock-bottom".