The term 'more irritable' can be described by the crossword solutions testier (7 letters), EDGIER (6 letters), crankier (8 letters), fussier (7 letters), grumpier (8 letters), touchier (8 letters), raspier (7 letters), and snappier (8 letters). Testier means more easily irritated or annoyed, EDGIER means having a sharp or bitter quality, crankier means bad-tempered or irritable, fussier means more particular or exacting, grumpier means more ill-tempered or surly, touchier means more sensitive or easily offended, raspier means more rough or harsh, and snappier means more quick or sharp. All of these words describe someone who is more irritable than usual.