1. big shot
2. big gun, big wheel, big cheese, big deal, big enchilada, big fish, head honcho, person
3. individual, someone, somebody, mortal, human, soul, detractor
4. disparager, depreciator, cynic, faultfinder, breast
5. bosom, boob, tit, titty, mammary gland, mamma, doorknocker
5. rapper, device