Translation Japanese English: 堅し

1 arduous, austere, awkward, backbreaking, callous, difficult, dour, embarrassing, fibrous, forbidding, grim, grueling, gruelling, hard, hard-boiled, hardhearted, heartless, heavy, indurate, knockout, laborious, operose, pachydermatous, punishing, rocky, rough, severe, sinewy, stern, sticky, stiff, stifling, stringy, sulfurous, sulphurous, sultry, toilsome, tough, toughened, unchewable, unenviable, unyielding.

2 arduous, backbreaking, baffling, elusive, grueling, gruelling, hard, heavy, intemperate, knotty, laborious, operose, problematic, problematical, punishing, toilsome, tough, toughened.

3 arduous, backbreaking, concentrated, difficult, grueling, gruelling, hard, heavy, intemperate, knockout, laborious, operose, punishing, severe, strong, surd, toilsome, tough, unvoiced, voiceless.

4 arduous, backbreaking, demanding, grueling, gruelling, hard, heavy, intense, laborious, operose, potent, punishing, rugged, severe, stiff, strong, terrible, tight, toilsome, tough, wicked.

5 aroused, blue, hard, hard-shelled, obstinate, puritanic, puritanical, strained, stubborn, tense, unregenerate, wound up.

6 buckram, contrary, dependable, fast, firm, formal, good, hard, honest, impregnable, inviolable, loyal, obstinate, perverse, reliable, rigid, safe, secure, solid, starchy, steadfast, steady, stiff, strong, tight, tough, toughened, true, truehearted, unassailable, unattackable, unbendable, unfaltering, unshakable, unwavering, wayward.

7 buckram, contrary, dependable, fast, firm, good, hard, honest, impregnable, inviolable, loyal, obstinate, perverse, reliable, rigid, safe, secure, solid, starchy, steadfast, steady, stiff, strong, stubborn, sure, tough, toughened, true, truehearted, unassailable, unattackable, unbendable, unfaltering, unregenerate, unshakable, unwavering, wayward.

8 firm, fixed, hard, rigid, set, solid, tough, toughened.

9 hard, rough, sturdy, tough, toughened, unsmooth.