Correct spelling for the English word "mubblefubbles" is [mˈʌbə͡lfˌʌbə͡lz], [mˈʌbəlfˌʌbəlz], [m_ˈʌ_b_əl_f_ˌʌ_b_əl_z] (IPA phonetic alphabet).
The word "mubblefubbles" is believed to be a colloquial term that originated in the United States during the 19th century. Its etymology is uncertain, as it is considered to be an example of a nonsense or made-up word. It appears to have emerged as a playful or humorous term used to describe a feeling of discontent, unwellness, or being out of sorts. While its exact origin is unclear, it is thought to be a whimsical invention with no specific linguistic roots.