The word "tishkoff" is a surname that is spelled phonetically. It is pronounced as [tɪʃkɔf] in IPA phonetic transcription. The first syllable "tish" is pronounced with a short "i" sound, followed by the "sh" sound which is pronounced as "ʃ". The last syllable "koff" is pronounced with the "k" sound followed by the short "o" sound and then the "f" sound. The spelling of this surname follows the English pronunciation rules and can be easily pronounced once the phonetic transcription is understood.