CONVINCE, CONVINCED, CONVINCING
ADJECTIVES
1200 ► SICKER fully convinced or assured; having confident or certain knowledge → Sc. & N. Eng. dial.
1571 ► CONCLUDENT convincing, decisive, conclusive; that ‘concludes’ a question or an opponent; final, certain → obs.
1613 ► CONVINCENT convincing → obs.
1657 ► CONVINCIVE having the power of convincing → obs.
1928 ► SOLD ON convinced by, or enthusiastic about, something → US sl.
NOUNS, PERSON
1570 ► A HARD NUT TO CRACK a person who is difficult to convince, understand, or know
1990 ► HARD SELL a person who is difficult to convince
VERBS
1579 ► SUP UP to be convinced; to take in, to ‘swallow’ a story → obs.
1804 ► INSENSE to convince, to cause to understand, to explain → Sc. & Eng. dial.
1975 ► MACK to convince or persuade in a deceptive way → African-American sl.
Lexicophilia 