עָמָל
From LSJ
μὴ κακὸν εὖ ἔρξῃς· σπείρειν ἴσον ἔστ' ἐνὶ πόντῳ → do no good to a bad man; it is like sowing in the sea
English (Strong)
the same as עָמָל; Amal, an Israelite: Amal.
English (Strong)
from עָמַל; toil, i.e. wearing effort; hence, worry, wheth. of body or mind: grievance(-vousness), iniquity, labour, mischief, miserable(-sery), pain(-ful), perverseness, sorrow, toil, travail, trouble, wearisome, wickedness.