Slugging rhymes with:
lugging, plugging, bugging, chugging, debugging, drugging, hugging, lugging, mugging, plugging, shrugging, snugging, tugging
Slugging sounds like:
salesman's, salesmen's, silicones, siliconix, slackening, slackens, slackness, slashing, slicing, slocan's, slogans, slogging, sloshing, slouching, sluggishness, sluicing, socializing, squelching, sulking