The word "Watsonius" is spelled with five phonemes: /w/ /ɑː/ /t/ /s/ /əʊ/. The first phoneme, /w/, represents a voiced labial-velar approximant, while the second phoneme, /ɑː/, represents an open back unrounded vowel. The third phoneme, /t/, represents a voiceless alveolar stop, and the fourth phoneme, /s/, represents a voiceless alveolar fricative. Finally, the fifth phoneme, /əʊ/, represents a diphthong consisting of an open-mid back rounded vowel followed by a close-mid back rounded vowel. The correct spelling of "Watsonius" should always reflect these exact phonemes.