firmness

1 firm or unwavering adherence to one's purpose a woman of remarkable firmness in the achievement of the goals she has set for herself Synonyms decidedness, decision, decisiveness, determinedness, determination, granite, purposefulness, resoluteness, resolution, resolve, stick-to-itivenessRelated Words doggedness, obduracy, obdurateness, obstinacy, obstinateness, perseverance, persistence, persistency, stubbornness, tenaciousness, tenacity; certainty, certitude, confidence, sureness; alacrity, eagerness, gameness, readiness; backbone, fortitude, grit, iron, pluck, sandNear Antonyms doubt, incertitude, indetermination, uncertainty; aversion, disinclination, indisposition, reluctance, unwillingnessAntonyms hesitation, indecision, indecisiveness, irresoluteness, irresolution, vacillation

2 the ability to withstand force or stress without being distorted, dislodged, or damaged test the firmness of the concrete before parking the car on it Synonyms stability, soundness, strength, sturdinessRelated Words dependability, durability, reliability; solidity, solidness; cohesion, toughnessNear Antonyms insubstantiality, unsoundness, unsubstantiality; weaknessAntonyms insecurity, instability, precariousness, shakiness, unstableness, unsteadiness