All the words in this thread are coming from Ancient Greek (hypnosis, history, homo, hoplite, hero etc). In Ancient Greek these words don’t start with an h (υπν

All the words in this thread are coming from Ancient Greek (hypnosis, history, homo, hoplite, hero etc). In Ancient Greek these words don’t start with an h (υπνοση, ιστορια, ομο, οπλίτης, ηρωας etc). In Ancient Greek polytonic orthography, vowels can have one of two diacritic marks: οξεία and δασεία. The second one is used to denote the /h/ sound (rough breathing). Words starting with vowels with this mark in their translation to English added the H before the vowel to denote this sound because of the lack of diacritic marks/accents https://en.wikipedia.org/wiki/Rough_breathing https://en.wikipedia.org/wiki/Rough_breathing