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adj.
(of e.g. speech and writing) tending to depart from the main point or cover a wide range of subjects; "amusingly digressive with satirical thrusts at women's fashions among other things"; "a rambling discursive book"; "his excursive remarks"; "a rambling speech about this and that"
adj.
deviating from a straight course; "a scenic but devious route"; "a long and circuitous journey by train and boat"; "a roundabout route avoided rush-hour traffic"
adj.
roundabout or ambiguous; "attacks from that source amounted to a backhanded compliment to his integrity"; "a backhanded and dishonest way of reaching his goal"
adj.
roundabout and unnecessarily wordy; "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; (`ambagious' is archaic)