In a clownish manner; with foolish or crude behavior; in a way that resembles or characterizes a clown's conduct.
From clownish + -ly (suffix creating adverbs from adjectives). Follows the standard English pattern of adjective → adverb through the addition of -ly, as in 'foolishly' or 'happily.'
Adding '-ly' to adjectives to make adverbs is so automatic that we barely notice—but it means English speakers can instantly turn any descriptor into an action, creating millions of potential adverbs.
Complete word intelligence in one call. Free tier — 50 lookups/day.