It isn't fursluggishness but I'm still trying to get behind periphrastic and following the indications of the American Heritage I went from periphrastic via periphrasis to
cir·cum·lo·cu·tion

The use of unnecessarily wordy and indirect language.
Evasion in speech or writing.
A roundabout expression. (and now I vaguely have an impression of where this case leaded to) smile