prēˈseptiv, prə̇ˈs-, -tēv adjective
Etymology: Middle English, from Middle French preceptif, from Latin praeceptivus, from praeceptus (past participle of praecipere to take beforehand, give rules or precepts to, instruct) + -ivus -ive — more at precept
: giving precepts : having the character of a precept : mandatory , didactic
the preceptive parts of the Bible
preceptive grammar
• pre·cep·tive·ly -tə̇vlē, -li adverb