to refuse an offer or request
to turn down
to delay doing something
to put off
to suddenly become very anxious, upset or afraid
to freak out
to do something bad without being punished for it
to get away with
to suggest or think of an idea or plan
to come up with
to start studying or working hard, to apply oneself to a task
to knuckle down
to make a mistake or to spoil something
to mess up
to cancel an event or agreement
to call off
to lose an opportunity to do or experience something
to miss out
to understand something or to solve a problem
to figure out