1. to suggest that a particular medical treatment or procedure should not be used because it may be harmful to the patient
Usage: medical/clinical context; third person singular present tense of contraindicate

Examples

• The patient's kidney disease contraindicates the use of that antibiotic.
• A severe allergy to penicillin contraindicates all beta-lactam antibiotics.
• The medication contraindicates driving or operating heavy machinery.
• Pregnancy contraindicates certain vaccines.
• His liver condition contraindicates alcohol consumption.
• The test results contraindicate surgery at this time.