nixes
Puts kibosh on
Nixes is the verb form of nix, meaning to reject, cancel, or put a stop to something: The studio nixed the sequel, Management nixed our proposal.
Nix suggests a quick, definitive refusal rather than a gradual decision.
The word has an informal, slightly punchy quality.
vetoes
Formally rejects proposed laws
revokes · rescinds · repeals · withdraws · terminates · halts · stops · discontinues · quashes · invalidates
refuses
Declines to accept
spurns · dismisses · turns down · shoots down · blocks · forbids · prohibits · disallows · opposes · thwarts
approval/rejection
nixesapproves
Formally accepts or endorses
okays · sanctions · authorizes · greenlights · accepts
enabling/blocking action
nixesgreenlights
Grants official approval
enables · facilitates · advances · promotes · supports