1. past tense of kibosh; to put an end to something; to reject or cancel a plan or idea
Usage: informal; usually used with 'put the kibosh on'

Examples

• The principal kiboshed the students' plan to have a late-night party.
• My parents kiboshed my idea of taking a gap year after high school.
• The budget cuts kiboshed the company's expansion plans.
• She kiboshed the rumor by explaining what really happened.
• The coach kiboshed any talk of skipping practice.
• They kiboshed the project before it even got started.