merciful, pitiless, implacable; callous, marble-hearted, fell, flinty, stony, indurated; aloof, distant, disdainful, stiff; insentient, impervious, indifferent, unsusceptible; untouched, unmoved, unstirred, unsympathetic, uncompassionate, uncaring, unmindful, unconcerned, hardened, thick-skinned, insensitive; soulless, passionless; hostile, adverse.
hardihood, n. 1. fortitude, strength, stamina, endurance. See - hardiness (defs. 1, 2).
2. courage, bravery. See - hardiness (def. 3).
3. rashness, impetuousness, temerity, temerariousness, daredeviltry, daredevilry, foolhardiness; recklessness, wantonness, carelessness, incautiousness, imprudence.
hardiness, n. 1. strength, strongness, able-bodiedness, might, mightiness, virility, power, powerfulness, potence, potency, force, forcefulness, Literary, puissance; toughness, ruggedness, sinew, sinewiness, wiriness, sturdiness, soundness, hardihood; brawniness, muscularity, huskiness, burliness, stoutness, heftiness; robustness, haleness, heartiness, red-bloodedness, vigorousness, vigor, vim and vigor; healthiness, fitness, fettle; resilience, resiliency, buoyancy, ability to bounce back.
2. fortitude, stamina, fiber, moral fiber, endurance, stability, steadiness, constancy, perseverance, tenacity, holding or lasting or staying power; determination, will, stalwartness, resolution, resoluteness, staunchness, stanchness, steadfastness, firmness, stubbornness, doughtiness, doggedness, bulldog courage.
3. courageousness, bravery, valor, valorousness, valiancy, valiance, heroism, prowess, stout-heartedness, lionheartedness, ironheartedness, great-heartedness, high-heartedness, chivalry, chivalrousness; courage, pluck, backbone, grit, U.S. Inf. sand, nerve, nerves of steel, inner strength, intestinal fortitude, SI. guts; intrepidity, intrepidness, fearlessness, dauntlessness, awelessness, dreadlessness, lack of fear; adventurousness, adventuresomeness, venturousness, venturesomeness, high-spiritedness, spiritedness, spirit, mettle, game, gameness, Inf spunk, Inf. spunkiness, Archaic. pith; boldness, bold-spiritedness, daring, derring-do, pluckiness.
hardly, adv. barely, scarcely, only, just, only just, not quite; little, not at all, almost not at all; with little likelihood, by no means, no way, in no way, in no manner; seldom, rarely, not often, infrequently, uncommonly, once in a blue moon.
hardness, n. 1. firmness, solidity, compactness, density; impenetrability, imperviousness, renitency, re-sistency; stiffness, rigidity, rigidness, inextensibility, inelasticity, inflexibility, unmalleability, intractability, unbendingness; immutability, unchangeableness, unal-terability; induration, ossification, petrification, frozenness, glaciation, insolubility.
2. rigor, tightness, strictness, stringency, severity, stoicism; harshness, acerbity, callousness, induration, obdurateness, toughness, unimpressibility; want of feeling, unfeelingness, insensibility, insensitivity; impassiveness, impassivity, indifference, coldness, iciness, sternness, grimness, sharpness; hard-heartedness, inhumanity, pitilessness, mercilessness; relentlessness, unyieldingness, inclemency, cruelty, truculence, ruthlessness; gall, rancor, asperity, bitterness, acridness, virulence.
3. difficulty, arduousness, toilsomeness, laboriousness, exhaustiveness, heaviness.
hard-nosed, adj. hard-headed, tough, unsentimental, practical; shrewd, prudent, sensible, efficient, calculating, politic, businesslike; uncompromising, unbending, hard-line, Inf. one-way.