Synonyms for Periphrastic:

adj.

equivocal (adjective)
obscure, roundabout.
indirect (adjective)
circumlocutory, obscure.
periphrastic (adjective)
redundant, prolix, verbose, pleonastic, diffuse, long-winded.
redundant (adjective)
wordy.
wordy (adjective)
verbose, pleonastic.

n.

words, pleonastic, prolix, redundant, diffuse, excess, wordy, long-winded, verbose, style. periphrastic (noun)
circumlocutory, ambagious, circumlocutious, indirect.

Other synonyms:

prolix, long-winded, pleonastic, redundant. wordy. Other relevant words:
verbose, pleonastic, long-winded, diffuse, prolix, wordy, roundabout, redundant.