| must(verb, need, require, obligate) |
| need(verb, require, obligate, must) |
| should(verb, need, require, obligate, must) |
| be expected(verb, have, proper, suit, beseem) |
| be fitting(verb, have, proper, suit, beseem) |
| be incumbent upon(verb, have, proper, suit, beseem) |
| be needful(verb, have, proper, suit, beseem) |
| be required(verb, have, proper, suit, beseem) |
| be requisite(verb, have, proper, suit, beseem) |
| be right(verb, have, proper, suit, beseem) |
| befit(verb, proper, suit) |
| beseem(verb, have, proper, suit) |
| owe it to(verb, expression, idiom, have, proper) |
| proper(verb, suit) |
| suit(verb, proper) |
| allow(verb, need, require, obligate, must) |
| be compelled to(verb, need, require, obligate, must) |
| be forced to(verb, need, require, obligate, must) |
| be needed(expression, idiom) |
| be up to(verb, need, require, obligate, must) |