n.
Function: adjective
Etymology: Middle English fel, from Anglo-French ― more at FELON
Date: 14th century
1 a : FIERCE , CRUEL , TERRIBLE b : SINISTER , MALEVOLENT <a fell purpose> c : very destructive : DEADLY <a fell disease>
2 Scottish : SHARP , PUNGENT
– fell · ness noun
– fel · ly \ ' fel-l ē \ adverb