形容 けいよう 相当 そうとう語句 ごくでしょう
keiyō shisōto ugokudeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 形容詞相当語句

1. Probably an adjective.; Likely an adjective.

Polite
Presumptive
Conjecture
Linguistics