κοπιάω (kopiáōkop-ee-ah'-overbto toil)
[Grk] κοπιάω LN: 23.78, 25.289, 42.47 GK: G3159 Hebrew: אוּץ, חָדַל, חוּל, חָלָה, חָלַל, חָשַׁל, יָאַל, יָגַע, יָעֵף, כָּשַׁל, לָאָה, עוּף, עָיֵף, עָמָל
Derivation: from a derivative of κόπος;
Strong's: to feel fatigue; by implication, to work hard
KJV: --(bestow) labour, toil, be wearied.
See: κόπος