formal adj.

1 very correct/official

VERBS be, seem, sound | become

ADV. extremely, very | strictly Learning was by rote and strictly formal. | almost The greeting was polite, almost formal. | fairly, quite, rather, relatively | oddly Her words sounded oddly formal. | stiffly His manner was stiffly formal.

2 concerned with the way sth is done

VERBS be

ADV. merely, purely Getting approval for the plan is a purely formal matter: nobody will seriously oppose it. | largely The monarch retains largely formal duties.

You can also check Google Dictionary: formal (English, 中文解释 ), wordnet sense

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