Vocabulary
diligent
adjective·/DIL-uh-juhnt/
Hardworking and careful in a steady, consistent way. Diligent means you put in real effort and attention, reliably.
Diligent combines effort with care. It is not just working hard, it is working hard the right way, consistently, without cutting corners. It is a quiet, dependable virtue, the kind of word that shows up in strong reference letters. "Due diligence," the careful research you do before a big decision, comes from the same root and is worth knowing as a phrase.
5 ways to use “diligent” in a sentence
- “She is diligent about following up, so nothing falls through the cracks.”
- “A diligent search of the records turned up the missing invoice.”
- “He is not the flashiest, but he is the most diligent person on the team.”
- “Be diligent with your prep and the interview feels a lot less scary.”
- “They did their due diligence before signing the contract.”
Now say "diligent" out loud, in your own sentence.
The fastest way to actually own a word is to use it when you speak, not just read it. Practice in TalkStride and get scored on how clearly it comes out.
Common mistakes
- Treating it as just "busy." Diligent implies care and consistency, not just activity.
- Forgetting the useful phrase "due diligence," which is where many people first meet the word.
- Confusing it with "negligent," which is its near-opposite, careless.
Similar words, and how they differ
hardworking
Hardworking is about effort. Diligent adds steady care and attention to that effort.
thorough
Thorough is about completeness on a task. Diligent is a consistent way of working over time.
persistent
Persistent is about not giving up. Diligent is about the careful, steady quality of the work itself.