The spelling of the word "Hardwen" can be explained using the International Phonetic Alphabet (IPA). The first syllable "hard" is pronounced as /hɑːrd/, with the "a" pronounced as the "a" in "car". The second syllable "wen" is pronounced as /wɛn/, with the "e" pronounced as the "e" in "pet". The combination of the two syllables forms a unique sound that is spelled as "Hardwen". The correct spelling and pronunciation of words is essential for effective communication.