- btw, this word has nothing to do with 'linguistics' - it's a legal term. please change the field to 'legal'.

- there is no corresponding term in malay. the word, which is originally french is used internationally without any change in spelling.

- below is an explanation of apostille from wiki:

Apostille is also a French word which means a certification. It is commonly used in English to refer to the legalisation of a document for international use under the terms of the 1961 Hague Convention Abolishing the Requirement for Legalisation for Foreign Public Documents. A document which has been certified with a conformant apostille is accepted for legal use in all the nations that have signed the Hague Convention. It is comparable (but not identical) to an attestation by a notary public in common law systems.

In countries which are not signatories to the 1961 convention and do not recognize the apostille, a foreign public document must be legalised by a consular officer of the country from which the document is issued.