1. (colloquial) am not, has not, have not, is not, are not

Encyclopedia: Ain't

• sulfa
• sulfa drug
• sulfacetamide
• sulfadiazine
• sulfamethazine
• sulfamethoxazole
• sulfamezathine
• sulfanilamide
• sulfanilic acid
• sulfapyridine
• sulfate
• sulfide
• sulfisoxazole
• sulfonamide
• sulfonate
• sulfone
• sulfonic acid
• sulfonylurea
• sulfur
• sulfur bacteria
• sulfur bottom
• sulfur butterfly
• sulfur dioxide
• sulfur hexafluoride
• sulfur mine