I1N1S1I1N1C3E1R1E1
11 points
INSINCERE is validvalid
not sincere [adj INSINCERER, INSINCEREST] : INSINCERELY [adv]
not sincere [adj INSINCERER, INSINCEREST, INSINCERELY]
not sincere [adj INSINCERER, INSINCEREST] : INSINCERELY [adv]
not sincere [adj INSINCERER, INSINCEREST, INSINCERELY]