English UsageComparison guide
Be Curious To Know vs. Curious About Something
Cambridge directly records curious + to-infinitive (including curious to know) and curious about + noun, supporting this narrow contrast.
Use “curious to know/find out…” when curiosity is followed by an infinitive describing what someone wants to learn. Use “curious about something” when the complement names the subject of curiosity.
Key details
Confusion Familyverb-complement
Rule Familyverb-complementation
Termscurious to know, curious about something
Further guidance
Core difference
Cambridge documents curious + to-infinitive and curious about + noun as standard complement patterns.
Style Boundary
Use about for the topic/object of curiosity; use to + verb when the complement is the infinitive action of learning or discovering.
Sources and evidence
Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.
- Curious (opens in a new tab)Cambridge University Press · Direct learner-dictionary evidence for curious about + noun and curious + to-infinitive, including curious to know.