The present invention provides a method of correction of misspelled and confused words in a phrase written in a natural language, as well as a computer system employing this method. The method of the invention comprises creating a fast-lookup N-gram database for context spelling combined with editing and phonetic rules, POS and grammar bindings. Employed in the computing system the method permits to achieve fast and efficient spelling correction with a high correction success level for most difficult texts. The method of the invention does not require any pre-training or pre-learning user-specific patterns of errors.