עָרֵל ʻârêl (H6188)

to expose or remove the prepuce, whether literal (to go naked) or figurative (to refrain from using)

1) to remain uncircumcised, count uncircumcised, count as foreskin 1a) (Qal) 1a1) to regard as uncircumcised 1a2) to remain unharvested (fig.) 1b) (Niphal) to be counted as uncircumcised

a primitive root; properly, to strip; but used as denominative from עָרֵל (H6189);