


The phrase "all of a sudden" has been in use since the 16th century and is believed to have originated from the earlier phrase "all on a sudden", which was used to describe something happening abruptly or without warning.
No, the phrase "all of the sudden" is not considered correct English usage. It is a common mistake, but the proper phrase is "all of a sudden".
Context matters in English because the meaning of words can vary based on the surrounding words, phrases, or situation. Words often have multiple meanings, and the intended sense becomes clear through the context in which they are used.

Fill our the form if you want to contact us for more information about Fluency