形容詞 periphrastic:

1. roundabout and unnecessarily wordy-T.S.Eliot; (`ambagious' is archaic)
   同義詞：circumlocutious, circumlocutory, ambagious

per.i.phras.tic

adj.（形容詞）
Having the nature of or characterized by periphrasis.
迂回曲折的：有折繞的天性或特性的
Grammar Constructed by using an auxiliary word rather than an inflected form; for example,of father is the periphrastic possessive case of father but father`s is the inflected possessive case, and did say is the periphrastic past tense of say but said is the inflected past tense.
【語法】 迂說法的：不用曲折變化形式而用助動詞表示的；例如， of father 是 father 所有格的迂說法而 father`s 是曲折變化的所有格，而且 did say 是 say 的迂回曲折的過去時但 said 是曲折變化過去時

【引伸】
per.iphras.tically
adv.（副詞）