Latin word tenere comes from Proto-Indo-European *tengʰ-, and later Proto-Indo-European *tetóne (To be stretched, extended.)
*tengʰ- (Proto-Indo-European)
tener (Latin)
(poetic) erotic. Effeminate, sensitive. Soft, delicate, tender. Young, youthful.
*tn̥-eh₁-(ye)- (Proto-Indo-European)
*tetóne (Proto-Indo-European)
To be stretched, extended.
*tenēō (Proto-Italic)
Hold.
tentare (Latin)