fainten

From faint +‎ -en (verbal suffix).

fainten (third-person singular simple present faintens, present participle faintening, simple past and past participle faintened)

1. (transitive, intransitive) To make or become faint.
   • 1808, Joseph Hall; Josiah Pratt, The Works of Joseph Hall:

     Thou wilt not be, either so little absent as not to whet our appetites, nor so long as to fainten the heart.

• Infante, infante