formative — giving form or shape; forming; shaping; fashioning; molding: a formative process in manufacturing.
normative — of or relating to a norm, especially an assumed norm regarded as the standard of correctness in behavior, speech, writing, etc.
Four-or-more syllable rhymes
performative — (of an expression or statement) performing an act by the very fact of being uttered, as with the expression “I promise,” that performs the act of promising.
Four-or-more syllable rhymes
informative — giving information; instructive: an informative book.
