FROM STRONG’S GREEK DICTIONARY (1890)

Strong’s Greek Dictionary (1890) — public domain, printed whole.

proskartereo προσκαρτερέω — pros-kar-ter-eh'-o — from 4314 and 2594; to be earnest towards, i.e. (to a thing) to persevere, be constantly diligent, or (in a place) to attend assiduously all the exercises, or (to a person) to adhere closely to (as a servitor):--attend (give self) continually (upon), continue (in, instant in, with), wait on (continually).

see GREEK for 4314

see GREEK for 2594