roll back (?.)

• abridge
• compress
• curtail
• curtail expenses
• cut
• cut back
• cut corners
• cut down
• damp
• dampen
• decrease
• deduct
• deflate
• depreciate
• depress
• diminish
• downgrade
• lessen
• lower
• pare
• pare down expenses
• reduce
• retrench
• scale down
• shorten
• simplify
• slow down
• step down
• take a reef
• take from
• tune down