This is the 524th most frequent Thai word.
นายช
The Thai word "นายช" does not appear to have a clear meaning. It may be a typo or shorthand requiring context.
นายช. denotes Mr. Ch, identifying the author of a book, respecting Thai formal naming conventions.
หนังสือเล่มนี้เขียนโดยนายช.
This book is authored by Mr. Ch.
นายช. in this sentence represents a respectful way to address Mr. Ch, signifying the title 'Mr.' in correspondence or mention.
นายช.เป็นนักธุรกิจที่ประสบความสำเร็จในประเทศไทย
Mr. Ch is a successful businessman in Thailand.
นายช. is used to respectfully refer to the recipient of an award, indicating formal acknowledgment of identity.