adjective. Conveying knowledge or information; enlightening.

Serving to instruct or inform; conveying knowledge.

adjective. Conveying knowledge; serving to instruct or inform.

adjective. conveying knowledge, information or instruction.

noun. A case in the Finnish language. It expresses the means or the instrument used to perform an action.

adjective. serving to instruct or enlighten or inform

"Randall, is very anxious that the services should be what he calls instructive; that courses, for instance, of sermons should be preached on certain books of the Old Testament, on the Pauline"

clarifying  demonstrative  didactic  didactical  doctrinaire  

conductive  constructive  destructive  nonproductive  obstructive  

amuse  edify  eloquent  enjoyable  helpful  

admonitory  advisory  authoritative  autodidactic  binding