piddler

/ˈpɪdlər/
noun
  1. A person who wastes time on unimportant or trivial things; someone who is not serious or productive.
    • Don't be a piddler—focus on what really matters.
    • My brother is a piddler who spends hours organizing his pencil case instead of doing homework.
    • The boss called him a piddler because he kept rearranging his desk instead of finishing the report.
Antonyms