FAIL

(NOT DO) [verb] [I] - to not do something which you should doHe promised to help, but he failed to arrive on time. [+ to infinitive]Her parents failed to understand that there was a problem. [+ to infinitive]The club had been promised a grant from the council, but the money failed to (= did not) materialize. [+ to infinitive]He never failed to take (= He always took) a disapproving stance on people who got divorced. [+ to infinitive]You couldn't fail to be (= It is impossible that you would not be) saddened by the distressing report on the famine victims. [+ to infinitive]I'd be failing in my duty if I didn't tell you about the risks involved in the project.You say I fail to see when you do not understand what someone means.I fail to see what you're getting at (= what you mean).I fail to see what this has to do with the argument.Be there by ten o'clock, without fail (= You must be there)!Every morning, without fail (= without exception), she used to sit in the park and read her newspaper.