1. A method comprising: detecting one or more character inputs in a first character alphabet as a preceding character string, the preceding character string corresponding to one or more valid characters in a second alphabet according to a transliteration operation; detecting a current character input in the first character alphabet following input of the preceding character string; determining, via a processor, whether the current character input is an ambiguous input; and selectively suspending processing of the current character input by the transliteration operation.