The word "gymnical" is not a commonly used word in English. Its spelling can be explained using the International Phonetic Alphabet (IPA). The first syllable "gymn" is pronounced with a hard "g", as in "go", followed by the "m" sound. The second syllable "i" is pronounced with a long "i" sound, as in "eye". The third syllable "cal" is pronounced with a hard "k" sound, followed by the "l" sound. Therefore, the IPA transcription for "gymnical" would be /ˈɡɪmˌnɪkəl/.