Familiar To vs. Familiar With separates two directly documented constructions: recognizability to someone versus a person’s knowledge or experience of something.
ReviewedEvidence1 sourceSectionEnglish Usage
Quick answer
Use familiar to when something is recognizable to a person; use familiar with when a person knows or has experience of something.
Key details
Confusion Familyusage-construction
Rule Familyconstruction choice
Termsfamiliar to, familiar with
Further guidance
Core difference
Cambridge documents familiar to for something that is recognizable and be familiar with for knowing someone or something well.
Style Boundary
The constructions reverse the perspective, so preserve who is doing the recognizing or knowing rather than swapping the prepositions mechanically.
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.
Familiar↗ (opens in a new tab)Cambridge University Press · Direct learner-dictionary evidence distinguishing familiar to from be familiar with.
Agree With vs. Agree On separates directly documented constructions and keeps the distinction narrow rather than turning a context-sensitive pattern into a universal preposition rule.
Angry With vs. Angry About separates directly documented constructions and keeps the distinction narrow rather than turning a context-sensitive pattern into a universal preposition rule.
Appropriate For vs. Appropriate To separates directly documented constructions and keeps the distinction narrow rather than turning a context-sensitive pattern into a universal preposition rule.
Available To vs. Available For separates directly documented constructions and keeps the distinction narrow rather than turning a context-sensitive pattern into a universal preposition rule.
Be Bound To Do vs. Bound For Somewhere separates two distinct Oxford-documented senses. Bound to do/be expresses certainty or likelihood, while bound for + destination describes travel toward a place. The guide keeps those senses separate from legal or duty-bound uses.
Be Elated To Do vs. Elated By Something compares two directly documented complement patterns for “elated.” Oxford evidence supports an infinitival use as well as elated at/by + noun phrase, so the guide explains the construction choice without generalizing from synonyms.
