A person who frowns frequently or habitually.
Directly from 'frown' (Middle English, possibly from Old French 'frogne' meaning a grimace) with the agent suffix '-er' added to denote someone who performs the action.
Before emoticons and emojis, people were described with words like 'frowner'—it's fascinating how we've always needed vocabulary to capture what someone's face naturally does, whether it's a character trait or mood.
Complete word intelligence in one call. Free tier — 50 lookups/day.