Prepositions with Adjectives
Adjective + preposition combinations that form adjective complements.
When an adjective needs more information to complete its meaning, it is often followed by a complement — and that complement frequently begins with a preposition. These adjective-preposition pairings are known as adjective complements, and they are among the most common structures in everyday English. Megan was afraid of thunderstorms — without of thunderstorms, the sentence feels incomplete: afraid of what, exactly?
The largest and most versatile group is adjective + of. It expresses the cause of an emotion — afraid of, scared of, terrified of — but also judgement and evaluation — kind of, nice of — and states of being — proud of, tired of. Closely related is adjective + about, which tends to describe emotional reactions to situations or events: angry about, anxious about, excited about, happy about.
When you need to describe a skill or ability, reach for adjective + at: good at, bad at, terrible at. This is one of the most useful patterns for talking about what you can and cannot do. For relationships and comparisons, use adjective + with to express feelings towards people (angry with, pleased with, disappointed with) and adjective + to for connection and similarity (married to, similar to, accustomed to, opposed to).
Other important pairings include famous for, responsible for, interested in, involved in, and different from. The pattern adjective + at/by is particularly flexible: you can be amazed at or amazed by, shocked at or shocked by — both are interchangeable in most contexts, so you can use whichever sounds better to you in the moment.
A powerful memorisation strategy: synonyms almost always share the same preposition. If you know angry with, then furious with and annoyed with follow naturally. Remarkably, antonyms follow the pattern too — good at pairs with bad at, interested in pairs with uninterested in. Learn one and you often get its opposite for free.
Examples
Megan was afraid of thunderstorms.
She's good at skateboarding.