tharen

Etymology 1
From, from. The vocalism in -a- is due to leveling from the present singular forms, while the loss of -f/-v- is probably due to simplification of the consonant cluster in forms like →, which then analogically spread to forms lacking a cluster.

Verb

 * 1)  To need to, to be required to
 * 2) To need, to require, to necessitate.
 * 3)  To have to, to be obligated to, to ought to
 * 4)  To be capable of, to be willing to

Usage notes
This verb is frequently conflated with due to its similarity with that verb.