The first kind of ibtidāʾ (independent lexical use) occurs when Form V is used in a particular meaning without an attested basic triliteral verb carrying that same use.
تَشَمَّسَ
Translation: He sat in or exposed himself to the sunshine.
The word is associated with shams (sun), but the textbook does not posit a matching ordinary simple verb with that meaning. A Form V word need not inherit an already-used Form I verb in that same sense.
LessonsEleven Semantic Properties of Form V (Tafaʿʿul): Response, Affectation, Avoidance, Adoption, and MoreQuiz
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Property 11: Independent Use Without a Simple Verb
The first kind of ibtidāʾ (independent lexical use) occurs when Form V is used in a particular meaning without an attested basic triliteral verb carrying that same use.
تَشَمَّسَ
Translation: He sat in or exposed himself to the sunshine.
The word is associated with shams (sun), but the textbook does not posit a matching ordinary simple verb with that meaning. A Form V word need not inherit an already-used Form I verb in that same sense.