parlous UK /ˈpɑːləs/US /ˈpɑɹləs/adjective 3adverb 1forms 2 adjective3 •Attended with peril; dangerous, risky.The situation became parlous when the weather made resupply impossible. •Appalling, dire, terrible.All whiche offences and mysdemenors abovesaid have bene commytted to the grete hurte and undoyng of your orator, and the right evill and parlous example, [etc.]; […] — 1520 •(no longer used, rare) Dangerously clever or cunning; also, remarkably good or unusual.A parlous Boy: go too, you are too shrew'd. — 1593 adverb1 •(no longer used) Extremely, very. formsmore parlous · most parlous