McCoy

=> the real McCoy (real1).

May-beetle, May-bug, maybe, mayday (also Mayday), mayfly, mayhem, mayn't, mayonnaise, mayor, mayoral, mayoralty, mayoress, maypole, maze, mazurka, MB, MBA, MBE, MC, MCC, McCarthyism, MCP, MD, MDT, me, mead, meadow, meadow lark, meager, meagre (US meager), meagrely, meagreness, meal, meal-ticket, mealie, meals-on-wheels, mealtime, mealy, mealy-mouthed, mean, mean business,