拗 has three readings: ào (stubborn; awkward — most common in writing, e.g. 拗口 'tongue-twisting', 拗脾气 'stubborn temper'), niù (dialectal: stubborn — 执拗 zhíniù), and ǎo (dialectal: to bend or break by twisting).
mistakes
Don't confuse with 抝 — that's a variant form of the same character. The compound 拗口 (àokǒu) 'awkward to pronounce' is the most everyday context you'll see this character in.
