plumb
adverb/plʌm/
/plʌm/
- (used before prepositions) exactly
- He was standing plumb in the middle of the road.
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- (old-fashioned, North American English, informal) completely
- He's plumb crazy.
Word Originadverb Middle English (originally in the sense ‘sounding lead’): via Old French from Latin plumbum ‘lead’.
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plumb