abandon

the trait of lacking restraint or control; reckless freedom from inhibition or worry; "she danced with abandon"

a feeling of extreme emotional intensity; "the wildness of his anger"

forsake, leave behind; "We abandoned the old car in the empty parking lot"

give up with the intent of never claiming again; "Abandon your life to God"; "She gave up her children to her ex-husband when she moved to Tahiti"; "We gave the drowning victim up for dead"

leave behind empty; move out of; "You must vacate your office by tonight"

stop maintaining or insisting on; of ideas or claims; "He abandoned the thought of asking for her hand in marriage"; "Both sides have to give up some claims in these negotiations"

leave someone who needs or counts on you; leave in the lurch; "The mother deserted her children"