Adverb (fukushi), Expressions (phrases, clauses, etc.)
using anything one can lay one's hands on; haphazardly; on the rebound; at random; indiscriminately
手当たり次第に買物をするのはやめたほうがいいですよ。You had better stop buying things at random.
Also written 手当たりしだい【てあたりしだい】、手当り次第【てあたりしだい】、手あたりしだい【てあたりしだい】、手あたり次第【てあたりしだい】、手当りしだい【てあたりしだい】