Akademik

firmness
noun
1. the muscle tone of healthy tissue (Freq. 1)
-

his muscular firmness

Syn: ↑soundness
Ant: ↑unsoundness (for: ↑soundness)
Derivationally related forms: ↑sound (for: ↑soundness), ↑firm
Hypernyms: ↑strength
2. the trait of being resolute (Freq. 1)
-

his resoluteness carried him through the battle

-

it was his unshakeable resolution to finish the work

Syn: ↑resoluteness, ↑firmness of purpose, ↑resolve, ↑resolution
Ant: ↑irresoluteness (for: ↑resoluteness)
Derivationally related forms: ↑firm, ↑resolute (for: ↑resoluteness)
Hypernyms: ↑trait
Hyponyms:
self-control, ↑self-possession, ↑possession, ↑willpower, ↑will power, ↑self-command, ↑self-will, ↑steadiness, ↑sturdiness, ↑stiffness, ↑stubbornness, ↑bullheadedness, ↑obstinacy, ↑obstinance, ↑pigheadedness, ↑single-mindedness, ↑adamance, ↑obduracy, ↑unyieldingness, ↑decisiveness, ↑decision, ↑determination, ↑purpose, ↑steadfastness
3. the property of being unyielding to the touch
Derivationally related forms: ↑firm
Hypernyms: ↑hardness
4. the quality of being steady or securely and immovably fixed in place
Syn: ↑steadiness
Ant: ↑unsteadiness (for: ↑steadiness)
Derivationally related forms: ↑firm, ↑steady (for: ↑steadiness)
Hypernyms: ↑immovability, ↑immovableness
Hyponyms: ↑granite, ↑sureness, ↑stability, ↑stableness

Useful english dictionary. 2012.