Hard-nosed and Off-key

Hard-nosed adjective - Sticking to an opinion, purpose, or course of action in spite of reason, arguments, or persuasion.

Off-key and hard-nosed are semantically related. In some cases you can use "Off-key" instead an adjective phrase "Hard-nosed".

Off-key adjective - Inaccurate in pitch.

Hard-nosed and off-key are semantically related. Sometimes you can use "Hard-nosed" instead an adjective phrase "Off-key".