The word "be tides" is often misspelled as "betides". The correct pronunciation of this word is /bɪˈtaɪdz/, where the stress is on the second syllable. The "be" in "be tides" is the archaic form of "by", meaning "happens". The word is typically used in the phrase "what be tides?", which means "what happens?". This phrase originated in Middle English, so it's understandable that its spelling and usage may be confusing to modern English speakers.
The phrase "be tides" is made up of two components: "be" and "tides".
The word "be" is a form of the verb "to be", which in Old English was "bēon" or "bēo". Over time, the Old English word "bēo" transformed into "be". "Be" is used here as an imperative form of the verb, meaning it is a command or instruction.
The word "tides" is derived from Old English as well. In Old English, the word for "time" was "tid" which later evolved into "tide". It originally referred to a portion or point in time.
The phrase "be tides" essentially means "happen" or "occur" in modern English. Its etymology can be traced back to Old English vocabulary and grammar rules.