What is another word for flat outs?
Pronunciation: [flˈat ˈa͡ʊts] (IPA) 
Flat-outs refer to a situation where someone is working at maximum capacity or doing something with full effort. Synonyms for this term include "full throttle," "with all one's might," "at full tilt," "pedal to the metal," or "going all out." These phrases all convey the sense of pushing oneself to the limit, often with a sense of urgency. Other synonyms for flat outs include "giving it one's all," "slamming it," or "maxing out." No matter which synonym one uses, the essential meaning remains the same: a person is exerting themselves to the fullest extent possible.
