Correct spelling for the English word "Periculous" is [pˌɛɹˈɪkjʊləs], [pˌɛɹˈɪkjʊləs], [p_ˌɛ_ɹ_ˈɪ_k_j_ʊ_l_ə_s] (IPA phonetic alphabet).
Dangerous; full of peril.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
The word "periculous" does not have a clear etymology as it is not a recognized English word. However, it appears to be a misspelling or variant of the word "perilous". The etymology of "perilous" can be traced back to the Latin word "periculosus", which means "full of danger" or "hazardous". The Latin root is "periculum", meaning "trial" or "danger". It eventually evolved into "perilous" in English, retaining its original sense of something risky or unsafe.