How many letters does the top answer for “worthy of reward. sir g. buck.” have?

The most common answer is guerdonable (11 letters).

Crossword clue: worthy of reward. sir g. buck.

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

guerdonable 11 letters web-def

Worthy of reward. Sir G. Buck.

by implication. sir g. buck. 50% similar → implicatively

inauspicious sir g. buck. 50% similar → inauspicate

to plunder. sir g. buck. 50% similar → rapine