Words that start with O

Obdurate

adj. stubborn and insensitive

Obfuscate

v. to darken; to confuse; to make confusing

Oblique

adj. indirect; at an angle

Oblivion

n. total forgetfulness; the state of being forgotten

Obscure

adj. unknown; hard to understand; dark

Obsequious

adj. fawning; subservient; sucking up to

Obtuse

adj. insensitive; blockheaded

Officious

adj. annoyingly eager to help or advise

Onerous

adj. burdensome; oppresive

Opaque

adj. impossible to see through; impossible to understand

Opulent

adj. luxurious

Orthodox

adj. conventional; adhering to established principles or doctrines, especially in religion; by the book

Ostensible

adj. apparent (but misleading); professed

Ostentatious

adj. excessively conspicuous; showy