Denies air to?

• Replaces in the TV lineup
• Bumps, on the air
• Makes a shutout bid
• Interrupts, as a broadcast
• Interrupts, as a TV broadcast
• Seizes before someone else can
• Appropriates
• Anticipates Forster (initially) to be included in homework, and Eliot similarly

Wiktionary Word definitions in Wiktionary
vb. (en-third-person singular of: preempt )