tamper with (?.)

• Paul-Pry
• adulterate
• approach
• bastardize
• bribe
• busybody
• butt in
• buy
• buy off
• contaminate
• cook
• corrupt
• cut
• debase
• denaturalize
• denature
• dilute
• doctor
• doctor up
• fake
• fix
• fool
• fool with
• fortify
• get at
• get to
• grease
• grease the palm
• have
• interfere
• interlope
• intermeddle
• interpose
• intervene
• juggle
• kibitz
• lace
• load
• lubricate
• make
• manipulate
• meddle
• meddle with
• mess with
• monkey with
• nose
• pack
• pay off
• plant
• pollute
• pry
• purchase
• reach
• retouch
• rig
• salt
• snoop
• sop
• sophisticate
• spike
• square
• stack
• suborn
• take care of
• tickle the palm
• water
• water down