The spelling of the word "Pacifical" can be a bit tricky. It is pronounced as /pəˈsɪfɪkl/ which follows the pattern of adding the suffix "-ical" to the base word "Pacific". However, this word is rarely used and many dictionaries list it as an alternative or archaic spelling for "Pacific". In general, when writing, it is better to avoid using uncommon or ambiguous spellings and stick to commonly accepted variants to ensure proper understanding and communication.
The word "Pacifical" does not have a clear etymology as it is considered a rare or obsolete term.
However, it appears to be derived from the word "pacific", which comes from the Latin word "pacificus", meaning "peaceful". "Pacifical" likely developed from the adjective form of "pacific", adding the suffix "-al" to denote a quality or characteristic pertaining to peace.
It is worth noting that "Pacifical" is not commonly used in contemporary English, and its usage might be limited to older texts or specialized contexts.