| accustom(verb, study, dull, develop, rough) |
| habituate(verb, study, dull, develop, rough) |
| harden(verb, study, develop, improve, prepare) |
| train(noun, verb, dull, develop, rough) |
| condition(verb, develop, tell, improve, prepare) |
| familiarize(verb, tell, prepare, endure, explain) |
| season(verb, study, dull, develop, rough) |
| indurate(verb, dull, develop, rough, adjust) |
| toughen(verb, rough, prepare, strengthen, scratch) |
| wont(verb, condition, usual, prime, enlighten) |
| acclimatize(verb, dull, develop, rough, prepare) |
| discipline(noun, verb, study, dull, develop) |
| use(noun, tell, condition, prime, enlighten) |
| acclimate(verb, dull, develop, rough, prepare) |
| prepare(verb, study, develop, improve, practice) |
| steel(verb, dull, develop, rough, prepare) |
| adapt(verb, dull, develop, rough, tell) |
| adjust(verb, dull, develop, rough, tell) |
| break(verb, set, develop, improve, prepare) |
| break in(verb, expression, phrasal verb, study, develop) |