The pit sets off a chain of improbable events leading back to a girl sitting under a tree.

Rare and improbable events do occur much more than we dare to think.

The character is depicted within stories as performing a number of improbable events.

A romance is a tale of improbable events, usually constructed to point a moral.

Like most insurance, policies for long-term care protect against improbable events.

If anyone had knowledge of such an improbable event, my client would be that person.

A life which included no improbable events would be the real statistical impossibility.

A wild combination of improbable events would have to occur to send the Americans home after the first round.

And in fact my involvement with the improbable events of the past twelve months was great.

From a novelist's perspective it is a "miraculous event", too improbable to be true.