Synonyms of preparatory

1 Syllable
prep
2 Syllables
proemial, tester, previous
3 Syllables
before, preceding, opening, prevenient, preexistent, primary, prodromal
4 Syllables
prelusive, trial-and-error, aforeknown, forerunning, precursory, prefatory, inductive
5 Syllables
elementary, precautionary, introductory, exploratory, experimental, preparative, above-named, preliminary
6 Syllables
aforementioned, above-mentioned, abovementioned