מַר mar (H4751)

bitter (literally or figuratively); also (as noun) bitterness, or (adverbially) bitterly

adj 1) bitter, bitterness 1a) of water or food 1b) of harlot's end, end of wickedness, cry (fig.) 1c) of pain (subst) adv 2) bitterly

or (feminine) מָרָה; from מָרַר (H4843);