[ 'ɒptətɪv , ɒp'teɪtɪv ]
■ adjective Grammar relating to or denoting a mood of verbs in Greek and certain other languages, expressing a wish, equivalent in meaning to English let's or if only .
Derivatives
~ly adverb
Origin
C16: from Fr. optatif , -ive , from late L. optativus , from optat- , optare (see opt ).