How many letters does the top answer for “the quality or state of being sicker, or certain. chaucer. spenser.” have?

The most common answer is sickerness (10 letters).

Crossword clue: the quality or state of being sicker, or certain. chaucer. spenser.

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

sickerness 10 letters web-def

The quality or state of being sicker, or certain. [Obs.] Chaucer. Spenser.

sikerness 9 letters web-def

The quality or state of being sicker, or certain. [Obs.] Chaucer. Spenser.