easily heard, seen, understood; clearly marked

apparent, obvious

(of words, ways of speaking or writing) used in situations when one must be particularly polite, impersonal, well-educated, traditional etc to give a good impression

established, orderly

that cannot be avoided; so frequently seed, heard etc that it is familiar and expected

certain; cannot be avoided

allowed by law; connected with law

allowable, permissible

decided and fixed; (of opinions, habits etc) fixed and not to be changed; unmoving; a group of games (in tennis etc); a group of similar things; the position (of the body, clothes etc)

decided

usual, established

usual, established