The caveat is simply a warning given by a person having or asserting an interest in the estate of the deceased against the court issuing any probate without notice to the caveator. The form of caveat shows that the person who enters a caveat admits that a particular property forms part of the estate of the Deceased testator, but objects either to the execution of the Will or to the proposed manner of dealing with any portion of the estate.

The person contending the will or grant of letters of administration, called the caveator, must show that he has some interest in the estate in order to entitle him to a locus standi in the probate court. He must show a caveatable interest in the estate of a Deceased person either by inheritance or otherwise.

In the case of death of the caveator, the court should endeavour to find out whether the deceased caveator has left behind him any heirs and legal representatives and see that the proceedings do not abate merely because they are not brought on record or they do not know about the proceedings.