Hard and Hard as nails

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

Hard as nails and hard are semantically related in cruel topic. In some cases you can use "Hard as nails" instead an adjective "Hard".

Nearby Words: harden, hardship, hardy, hardly, hardness

Hard and hard as nails are semantically related in sturdy topic. You can use "Hard" instead an adjective phrase "Hard as nails", if it concerns topics such as cold, indifferent, insensitive.