What does chillier mean?
"Chillier" is the comparative form of the adjective "chilly," describing something that is somewhat cold, or colder than something else. It is most often used literally, as in "the mornings are getting chillier," making it a staple of everyday talk about seasons, weather, and clothing choices. Like its base word, however, it also carries a figurative sense: a person's manner, a welcome, or an atmosphere can be described as chillier when it feels less friendly or welcoming than before. In this use it conveys a subtle emotional distance — polite on the surface, but noticeably cooler underneath. Formed regularly by adding the comparative suffix "-er," it pairs naturally with "than" for explicit comparisons. Because temperature metaphors run deep in English, "chillier" is a versatile little word, equally at home describing an autumn breeze and a frosty glance across a boardroom table.
adjectiveThe comparative form of "chilly": somewhat cold, or colder than something else.
- Somewhat cold in temperature.
- (Of manner or atmosphere) unfriendly, distant, or lacking warmth.
"Pack an extra layer — evenings by the coast tend to be chillier than you'd expect."
"The forecast promises chillier nights as autumn sets in."
"After their disagreement, his emails took on a distinctly chillier tone."
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of chillier
"Chillier" is formed straightforwardly from "chilly" plus the native English comparative suffix "-er." "Chilly" derives from the noun "chill," which has been in English since the Middle English period; its further origins are uncertain, though it may be related to Old English words for cold such as "ciele." The word family includes "chill," "chilliness," and "chilled," all sharing this same Germanic root.
Related word forms
How chillier is actually used
"Chillier" works both literally, for weather and temperature, and figuratively, for interpersonal coldness. The figurative use often appears in phrases like "a chillier reception," where it suggests polite but noticeable coolness rather than open hostility.
Easily confused with chillier
"Chiller" is a noun meaning a machine or container that cools things (or a frightening story or film), whereas "chillier" is simply the comparative of the adjective "chilly."