Today's Word of the Day means...
To raise; increase: My confidence has upped itself (1925+)
[first adjective sense is based on up, ''effervescent, bubbling,'' used of beer and other drinks; later similar uses, from the 1940s, are based on the ''high'' produced by narcotics]
A close look; scrutiny: The tray-toter gave me the slow up-and-down
[1924+; found by 1820 in Byron's Don Juan, ''a survey up and down'']