The Oxford Dictionary has now included “Aiyoh” and “Aiyah” in its latest addition this September (the OED does four updates every year). The OED is and was the Bible of “correct English” for many children in the English-speaking world. It is widely regarded as the accepted authority and guide on the English language — something you scamper to when in doubt.
Like many Indian words, this one is loaded and can mean many things depending on context and tone — irritation, disgust, surprise, dismay, pain, lament, disappointment, with “aiyah” and “aiyoh” being interchangeable.
The Oxford English Dictionary (OED) is a descriptive dictionary of the English language, published by the Oxford University Press. It traces the historical development of the English language, providing a comprehensive resource to scholars and academic researchers, as well as describing usage in its many variations throughout the world. The second edition came to 21,728 pages in 20 volumes, published in 1989.
Work began on the dictionary in 1857, but it was not until 1884 that it began to be published in unbound fascicles as work continued on the project, under the name of A New English Dictionary on Historical Principles; Founded Mainly on the Materials Collected by The Philological Society. In 1895, the title The Oxford English Dictionary (OED) was first used unofficially on the covers of the series, and in 1928 the full dictionary was republished in ten bound volumes. In 1933, the title The Oxford English Dictionary fully replaced the former name in all occurrences in its reprinting as twelve volumes with a one-volume supplement. More supplements came over the years until 1989, when the second edition was published. Since 2000, a third edition of the dictionary has been underway, approximately a third of which is now complete.
The first electronic version of the dictionary was made available in 1988. The online version has been available since 2000, and as of April 2014 was receiving over two million hits per month. The third edition of the dictionary will probably only appear in electronic form; Nigel Portwood, chief executive of Oxford University Press, feels it unlikely that it will ever be printed.