Sentence:  The Urbanized Area is often considered the best measure of urban size because it neither "underbounds" the city (by taking just the political city) or "<WSD>overbounds</WSD>" it (including peripheral, largely rural areas).   antonyms 
Meaning of the word marked with <WSD> tags:  To specify or use boundaries that are too large; to have boundaries that encompass more than the entirety of an entity.