"circumlocutory" in the adjective sense
1. circumlocutious, circumlocutory, periphrastic, ambagious
roundabout and unnecessarily wordy (`ambagious' is archaic)
"had a preference for circumlocutious (or circumlocutory) rather than forthright expression"
"A periphrastic study in a worn-out poetical fashion,/ Leaving one still with the intolerable wrestle/ With words and meanings."-T.S.Eliot
Source: WordNet® (An amazing lexical database of English)
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