1) Cancels 2) Vetoes 1) Counterorders 2) Gives a snappy no to 3) Gives a thumbs-down 4) Gives the thumbs-down to 5) Just says no to 6) Puts a stop to 7) Puts the kibosh on 8) Puts thumbs down 9) Refuses to agree to 10) Rejects 11) Strikes out 12) Turns down 13) Vetoes 14) Vetoes on a low level 15) Vetoes, slang