"Wahlroos" is a Finnish surname and its spelling follows the rules of the Finnish language. In IPA phonetic transcription, it is pronounced as [ˈʋɑhlro̞ːs]. The "w" in "Wahlroos" is replaced with the Finnish letter "v", which sounds like "v" in English. The "h" is pronounced with a slight breathy sound, making it a voiceless glottal fricative. The double "oo" represents a long vowel, pronounced with a stretched-out "o" sound. The final "s" is a voiceless alveolar fricative, similar to the "s" in "snake".