work against (?.)

• antagonize
• be antipathetic
• be inimical
• beat against
• clash
• collide
• conflict
• conflict with
• confute
• contradict
• contrapose
• contravene
• counter
• counteract
• counterattack
• counterpose
• countervail
• counterwork
• cross
• go against
• go counter to
• interfere with
• lock horns
• meet head-on
• militate against
• oppose
• oppugn
• resist
• run against
• run counter to
• swim upstream