Generally an expert means a person who has special knowledge  and skill in a special field either by the study  or by the  experience. Some  experts are being expert through their study  and some are being expert through their experience. In the western  or developed country ,these people are recognized as an expert. Who did  special courses like Doctor, Engineer  and other specialized people. But in context of Nepal those people are recognized  as an expert who have long time experience about such matter of handwriting, a person who observed someone handwriting from long time before. Section 23 of Evidence Act 2031, states “An expert as a person  who has gained special knowledge  through  special studies , training  and experience”.

According to Black’s Law Dictionary, “An expert is a person who through education or experience  has developed skill or knowledge in a particular subject , so that she/he may opinions that will assist the  fact finders.

Similarly, according to Ballentine’s Dictionary, “An expert means , one who  is qualified either by actual experience or by careful  study , as to enable  him/her  to form  a definite opinion of his/her own respecting a division of science, branch  of art or department of trade about which persons having  no particular training or special study  are incapable  of forming accurate opinions or deducing correct conclusions.

Section 45 of Indian Evidence Act 1872 states that “when the court has to form an opinion upon a point  of foreign law, or science, or art or as to identify of handwriting  or finger  print  expression , the opinion  upon  that point  of persons specially skilled in such  foreign  law, science or art , or in question as to identify  of handwriting  or fingerprint impression  are relevant  facts. Such person is called an expert.

In short, we can say an expert is that person who has knowledge on particular field by the study training or by the experience.