ob

obdurate (adj.) unyielding to persuasion or moral influences (The obdurate old man refused to take pity on the kittens.)

obfuscate (v.) to render incomprehensible (The detective did want to answer the newspaperman’s questions, so he obfuscated the truth.)

oblique (adj.) diverging from a straight line or course, not straightforward (Martin’s oblique language confused those who listened to him.)

oblivious (adj.) lacking consciousness or awareness of something (Oblivious to the burning smell emanating from the kitchen, my father did not notice that the rolls in the oven were burned until much too late.)

obscure (adj.) unclear, partially hidden (Because he was standing in the shadows, his features were obscure.)

obsequious (adj.) excessively compliant or submissive (Mark acted like Janet’s servant, obeying her every request in an obsequious manner.)

obsolete (adj.) no longer used, out of date (With the inventions of tape decks and CDs, which both have better sound and are easier to use, eight-track players are now entirely obsolete.)

obstinate (adj.) not yielding easily, stubborn (The obstinate child refused to leave the store until his mother bought him a candy bar.)

obstreperous (adj.) noisy, unruly (Billy’s obstreperous behavior prompted the librarian to ask him to leave the reading room.)

obtuse (adj.) lacking quickness of sensibility or intellect (Political opponents warned that the prime minister’s obtuse approach to foreign policy would embroil the nation in mindless war.)