to use
לְהִשְׁתַּמֵּשׁ
In the present tense, “to use” is מִשְׁתַּמֵּשׁ (masculine), מִשְׁתַּמֶּשֶׁת (feminine), מִשְׁתַּמְּשִׁים (masculine plural) and מִשְׁתַּמְּשׁוֹת (feminine plural). Root שׁ-מ-שׁ, binyan הִתְפַּעֵל.
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