More firm or solid; harder, more stable, or more resolute in commitment or belief.
From Old French 'ferme' (strong, solid), derived from Latin 'firmus' (strong, steady). The comparative form 'firmer' is created by adding '-er' to 'firm', following a standard English pattern.
The comparison 'firmer' is interesting because 'firm' describes both physical and psychological states—something can be firmer in texture (a firmer mattress) or in resolve (a firmer commitment), and the same word works perfectly for both.
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