discountenance (v.)

• abash
• baffle
• balk
• blast
• brave
• chagrin
• challenge
• checkmate
• circumvent
• confound
• confront
• confuse
• contravene
• counter
• counteract
• countermand
• cross
• dash
• defeat
• defy
• deprecate
• destroy
• discomfit
• disconcert
• disesteem
• disfavor
• dish
• disrupt
• distress
• elude
• faze
• flummox
• foil
• frown
• frustrate
• nonplus
• object
• perplex
• rattle
• reproach
• reprove
• ruin
• sabotage
• scotch
• spike
• spoil
• stonewall
• stump
• thwart
• upset