Synonyms for Predominant (same or very similar meaning)
WordNet sense 1 (most frequent or common):
prevailingWordNet sense 2 (coming at short intervals or habitually):
frequent, frequentWordNet sense 3 (having superior power and influence):
overriding, paramount, predominate, preponderant, preponderatingWordNet sense 4 (exercising influence or control):
dominantFrom the ODE community, based on WordNetadd/edit