That consumes everything; that uses everything up.(adjective)
Totally engrossing, using up all of one's time and energy.(adjective)
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Use "all-consuming" in a sentence
"It's weird because when you're working on the show, it's so all-consuming that my main memory of it is everyone talking comedy and writing and just the whole intensity of it."
"And TV itself is driven by an engine of all-consuming self-improvement."
"My dedication to my students is all-consuming and unconditional."