| strengthen(verb, support, close, fix) |
| brace(verb, support, close, fix) |
| harden(verb, support, close, increase) |
| fortify(verb, support, close, fix) |
| reinforce(verb, support, close, fix) |
| temper(noun, verb, close, fix) |
| acclimate(verb, close, keep, overcome) |
| acclimatize(verb, close, fix, continue) |
| anneal(verb, support, close, fix) |
| season(verb, close, keep, overcome) |
| stiffen(verb, support, close, fix) |
| indurate(verb, close, fix, settle) |
| buttress(verb, support, close, fix) |
| callous(verb, adjective, close, fix) |
| steel(verb, support, close, fix) |
| calcify(verb, close, fix, settle) |
| consolidate(verb, support, close, fix) |
| fossilize(verb, close, fix, settle) |
| gird(verb, support, close, fix) |
| nerve(verb, close, fix, settle) |