The correct spelling of the phrase "under sense" is actually one word - "undersense". The IPA phonetic transcription for this word is /ˌʌndərˈsɛns/, with the stress on the second syllable. This word is not commonly used in everyday language, but it refers to a subtle or underlying meaning or feeling, often not explicitly stated. It is important to remember correct spelling and usage of words in order to effectively communicate our thoughts and ideas.