Crosswordiee.com

% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for Sylvester has one 4 letters:

LISP: Sylvester has one
LISP: Sylvester the cat has one
LISPER: Sylvester, for one
LISPER: Sylvester is one, famously