Superlative form of 'bully': the most aggressive, dominating, or bullying in character; or most muscular and bullish in appearance.
From 'bully' with the superlative suffix '-est', the highest degree of the quality. This follows English's basic pattern for showing the most extreme version of an adjective.
Superlatives like '-est' have been in English since Old English times, which is why we say 'biggest' instead of 'more big'—some of the oldest grammar patterns still rule our language!
Complete word intelligence in one call. Free tier — 50 lookups/day.