Hard-boiled and Off-key

Hard-boiled adjective - Having or showing a lack of sympathy or tender feelings.

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

Off-key adjective - Inaccurate in pitch.

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