Synonyms for Manifest (same or very similar meaning)
WordNet sense 1 (clearly revealed to the mind or the senses or judgment):
apparent, evident, patent, plain, unmistakable, patent
WordNet sense 2 (easily perceived by the senses or grasped by the mind):
obvious
WordNet sense 3 (provide evidence for; stand as proof of; show by one's behavior, attitude, or external attributes):
attest, certify, demonstrate, evidence
From the ODE community, based on WordNet
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