すっかり の訳語→ absolutely all already altogether anew awful certainly completely deep deeply dramatically drastically dreadfully easily every everything exactly extremely fairly finally forever freely full fully genuinely hopelessly indeed late much nicely noticeably perfectly quite rapidly real really ridiculously seriously severly significantly simply so splendidly spoil stone sufficiently terribly totally unmitigated very well whole
余計な の訳語→ gratuitous information redundant useless vain wrong
余分な の訳語→ supernumerary unnecessary