expression, i-adjective
refusing to budge; adamant; unyielding
Idiomatic expression meaning someone is so stubborn or determined that they cannot be moved, as if even a lever couldn't shift them. Often used in negative contexts to describe obstinacy.
彼はテコでも動かない態度で、誰の意見も聞こうとしなかった。
He was adamant and wouldn't listen to anyone's opinion.
あの頑固な上司はテコでも動かないから、説得するのは無理だ。
That stubborn boss is unyielding, so it's impossible to persuade him.