1. Clearly revealed to the mind or the senses or judgment
   - apparent, evident, manifest, patent, plain, unmistakable 
2. Clearly evident to the mind
   - unmistakable

See also: clear, obvious

• ostiole
• ostium
• ostler
• Ostmark
• ostomy
• Ostraciidae
• ostracise
• ostracism
• ostracize
• ostracod
• Ostracoda
• ostracoderm
• Ostracodermi
• Ostrava
• Ostrea
• Ostrea gigas
• Ostreidae
• ostrich
• ostrich fern
• Ostrogoth
• Ostrya
• Ostrya carpinifolia
• Ostrya virginiana
• Ostryopsis
• Ostwald