smarty-pants 
(British also smarty-boots)
noun
Another term for smarty (sense 1).Try it out on the office know-it-all, or the smarty-pants next door....
- It does no good in our age of specialization and fragmentation to be a know-it-all smarty-pants, especially if some of that knowledge is at times sadly so superficial.
- Guys see me as a goodie-goodie and a smarty-pants.
- metal man
- metalmark
- metal matrix
- metal matrix composite
- metal Mike
- metalogic
- metalogical
- metalogically
- metalogician
- metalogue
- metaloph
- metalorganic
- metal polish
- metal rectifier
- metalsmith
- metal stone
- metal thread
- metal-to-metal
- metal value
- metalware
- metal wood
- metalwork
- metalworker
- metalworking
- metalworks