Genesis 8:10

And he stayed. וַיָחֶל, fut. apoc; Hif. of חוּל, to turn, to twist, to be afraid, to tremble, to wait (Furst); fut. apoc. Kal (Gesenius). Yet other seven days. עוֹד, prop. the inf. absol, of the verb עוּט, to go over again, to repeat; hence, as an adverb, conveying the idea of doing over again the action expressed in the verb (cf.

Genesis 46:29; Psalms 84:5). And again he sent forth—literally, he added to send (cf. Genesis 8:12, Genesis 8:21)—the dove out of the ark.