| Pathogenic (a.) Causing disease; as, a pathogenic organism; a pathogenic bacterium. Thesaurus Entries bad, bad for, contaminated, foul, harmful, injurious, insalubrious, insanitary, morbific, noisome, noxious, peccant, pestiferous, polluted, septic, tainted, unhealthful, unhealthy, unhygienic, unsanitary, unwholesome |