(from verb to adj)ate to ative (from verb to adj)cate to cative

APPROBATE                 APPROBATIVE
PROBATE                   PROBATIVE

ELUCIDATE                 ELUCIDATIVE
SEDATE                    SEDATIVE

INCHOATE                  INCHOATIVE

DISSIPATE                 DISSIPATIVE
EMANCIPATE                EMANCIPATIVE
EXTIRPATE                 EXTIRPATIVE

ALTERCATE                 ALTERCATIVE
COMMUNICATE               COMMUNICATIVE
COMPLICATE                COMPLICATIVE
DEDICATE                  DEDICATIVE
DOMESTICATE               DOMESTICATIVE
DUPLICATE                 DUPLICATIVE
FABRICATE                 FABRICATIVE
IMPLICATE                 IMPLICATIVE
INTERCOMMUNICATE          INTERCOMMUNICATIVE
INDICATE                  INDICATIVE
INTOXICATE                INTOXICATIVE
LOCATE                    LOCATIVE
RECIPROCATE               RECIPROCATIVE
REDUPLICATE               REDUPLICATIVE
SUFFOCATE                 SUFFOCATIVE
VINDICATE                 VINDICATIVE