formidableadjective · Level 1 SAT1arousing fear or alarmThe defense team assembled a formidable array of expert witnesses whose testimony proved difficult to challenge.ModuleLevel 1Registerargument, common, contrast, toneCollectionCollection 037SAT Core planAlso in Collection 037discreet, odious, redoubtable, morose, torrid, immutable, pugnacious, juvenile and 1 more