But on this particular occasion he had a very definite cause for discontent.

In most cases of costochondritis, there is no definite cause.

The other is a definite and more reasonable cause for the start of the feud.

Schizophrenia has no definite cause; however, certain risk factors such as family history seem to correlate.

The plane was too badly damaged to determine a definite cause.

Have to wait on the coroner for a definite cause of death.

Costochondritis is an inflammatory process but usually has no definite cause.

But for the most part, definite causes remain unknown.

Even when aggressive measures are taken, a definite cause for pneumonia is only identified in half the cases.

Often, no definite cause will be found and reassurance is then provided.