plainly — clear or distinct to the eye or ear: a plain trail to the river; to stand in plain view.
vainly — excessively proud of or concerned about one's own appearance, qualities, achievements, etc.; conceited: a vain dandy.
Three-syllable rhymes
humanely — characterized by tenderness, compassion, and sympathy for people and animals, especially for the suffering or distressed: humane treatment of prisoners.
ungainly — not graceful; awkward; unwieldy; clumsy: an ungainly child; an ungainly prose style.
