Crossword clue: useless or profitless activity; using or expending or consuming thoughtlessly or carelessly

The most common answer is dissipation (11 letters).

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

Possible answers

dissipation 11 letters wn-def

useless or profitless activity; using or expending or consuming thoughtlessly or carelessly

wastefulness 12 letters wn-def

useless or profitless activity; using or expending or consuming thoughtlessly or carelessly