Sharpening rhymes with:
corpening, cheapening, corpening, dampening, deepening, happening, opening, reopening, ripening, terpening
Sharpening sounds like:
sarbanes, scorpions, scraping, scrapings, scrapping, scrivens, scrubbing, serbian's, serbians, serving, servings, sharpens, sharpnack, sharpness, surfing, surveying, surviving