Difficult, of an activity, as work; of a state to be endured; of someone or something upon or with whom/which an action is being performed, or regarding whom/which a condition is endured.
+Ūngal hinan napāyad hi honogon ti ibahhawnay alyon.
(It) is difficult to send a lazy person because he will do what is told him incorrectly.
For someone, something, an activity, state, as described above (actor -um- & inst), to cause someone (patient -on) much difficulty in doing something.
Umūngal han tāmu' ti adīa' pa'idyamma.
My work causes (me) much difficulty because I am unable to make (what I am trying to make).
Inūngal Alanghābon nan mumbatāwel hi payawna.
Alanghābon caused much difficulty to the ones carrying (rice) on their shoulders, (i.e., because the rice was heavy).
Ungālon: also used reflexively with focus on oneself; unexpressed.
Inūngalmi an inohwel din batu ya unmi etpeng.
We caused (ourselves) much difficulty in prying up the stone before we used it in stone walling.