The word "Fumacious" is not a commonly known word, and it is often misspelled as "fumacious" or "fumashus". However, the correct spelling is "fumaceous" (fjʊˈmeɪʃəs), with the stress on the second syllable. The word is derived from the Latin word "fumus" meaning "smoke" and is used to describe things that are smoky or having the odor or color of smoke. Despite its rarity, it is important to get the spelling of this word right to prevent confusion and convey accurate meaning.
The word "fumacious" is a relatively rare and obscure term, and its etymology is not well-documented or widely agreed upon. However, it appears to have Latin roots, derived from the Latin word "fumus", meaning "smoke" or "vapor". The suffix "-acious" is also derived from Latin and is used to form adjectives, suggesting that "fumacious" describes something that is related to or characterized by smoke, vapor, or fumes. Nevertheless, it is worth noting that "fumacious" is not commonly used in contemporary English and may be considered archaic or obsolete.