assiduous

[ uh-sij-oo-uhs ]

Part of Speech

adjective

Definition

constant in application or effort; working diligently at a task; persevering; industrious; meticulous

Origin + Etymology

from Latin assiduus, from assidere ‘be engaged in doing’ (see assess), + -ous

Synonyms

  • diligent
  • exacting
  • indefatigable
  • laborious
  • scrupulous
  • zealous

Antonyms

  • indifferent
  • lazy
  • lethargic
  • negligent
  • neglectful

Example

In regards to his attendance in class, he was assiduous.

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