firmer

The definition of firmer is more solid, or more unyielding when pressed.

(adjective)

If one mattress is harder and more unyielding than the other, it is an example of a firmer mattress.

See firmer in Webster's New World College Dictionary

adjective

designating a carpenter's chisel or gouge with a thin blade fixed in a handle

Origin: Fr fermoir, altered < formoir < former, to form

noun

a firmer chisel or gouge

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