9 letters · 17 points in Scrabble
adjective able to cause disease
adjective caused by infection or capable of causing infection
originEtymology tree English infect Proto-Indo-European *-wós Proto-Indo-European *-iHwósder. Latin -īvus Old French -ifbor. Middle English -yf English -ive English infective From infect + -ive.
Etymology from Wiktionary, CC BY-SA 3.0