The muscle tone of healthy tissue:
— His muscular firmness.

synonym: soundness.

Polish: jędrność

The trait of being resolute.

synonyms: firmness of purpose, resoluteness, resolution, resolve.

Roget 604: determination, will; iron will, unconquerable will; will of one's own, decision, resolution; backbone; clear grit, true grit, grit [U.S.]; sand, strength of mind, strength of will; resolve etc. (intent) 620; firmness etc. (stability) 150; energy, manliness, vigor; game, pluck; resoluteness etc. (courage) 861; zeal etc. 682; aplomb; desperation; devotion, devotedness.    mastery over self; self control, self command, self possession, self reliance, self government, self restraint, self conquest, self denial; moral courage, moral strength; perseverance etc. 604.1; tenacity; obstinacy etc. 606; bulldog; British lion.    ... show more

Roget 861: courage, bravery, valor; resoluteness, boldness etc. adj.; spirit, daring, gallantry, intrepidity; contempt of danger, defiance of danger; derring-do; audacity; rashness etc. 863; dash; defiance etc. 715; confidence, self-reliance.    manliness, manhood; nerve, pluck, mettle, game; heart, heart of grace; spunk, guts, face, virtue, hardihood, fortitude, intestinal fortitude; firmness etc. (stability) 150; heart of oak; bottom, backbone, spine etc. (perseverance) 604.1. resolution etc. (determination) 604; bulldog courage.    prowess, heroism, chivalry.    exploit, feat, achievement; heroic deed, heroic act; bold stroke.    man, man of mettle; hero, demigod, Amazon, Hector; lion, tiger, panther, bulldog; gamecock, fighting-cock; bully, fire eater etc. 863.    ... show more

Polish: kategoryczność, zdecydowanie, stanowczość

The property of being unyielding to the touch.

The quality of being steady or securely and immovably fixed in place.

synonym: steadiness.

Roget 604a: perseverance; continuance etc. (inaction) 143; permanence etc. (absence of change) 141; firmness etc. (stability) 150.    constancy, steadiness; singleness of purpose, tenacity of purpose; persistence, plodding, patience; sedulity etc. (industry) 682; pertinacy^†, pertinacity, pertinaciousness; iteration etc. 104; bottom, game, pluck, stamina, backbone, grit; indefatigability, indefatigableness; bulldog courage.    ... show more