Contaminant rhymes with:
determinant, dominant, eminent, immanent, imminent, permanent, predominant, preeminent, prominent, ruminant, semipermanent
Contaminant sounds like:
comandante, commandant, commandment, commitment, condemned, condiment, conditioned, condoned, contained, containment, contaminate, contaminated, contant, contend, contended, content, contented, contento, continent, continued, continuity