clarifying
demonstrative
didactic
didactical
doctrinaire
educational
educative
elucidative
explanatory
expositive
expository
illustrative
interpretative
interpretive
ostensive
preachy
admonitory
advisory
authoritative
autodidactic
binding
canonical
cautionary
coeducational
commanding
communicative
compelling
consultative
consultatory
cultural
decretal
decretive
decretory
dictated
dictating
directive
disciplinary
docent
edifying
educating
enlightening
exhortative
exhortatory
expostulative
expostulatory
formulary
hard and fast
helpful
homiletic
hortative
hortatory
illuminating
imperative
informational
informative
informing
initiatory
introductory
jussive
lecturing
amuse
edify
eloquent
enjoyable
illuminate
impressive
inspire
memorable
please
poetical
profitable
suggestive
valuable
conductive
constructive
destructive
nonproductive
obstructive
photoconductive
productive
reconstructive
reproductive
seductive
superconductive
unproductive