The word “all” refers to the entirety or the whole quantity of something. It signifies the concept of inclusiveness, meaning that it covers every part, aspect, or member of a group without exception. For example, if you say "all students passed the exam," it means every student in that particular group successfully passed.
The word "all" comes from Old English "eall," which means "the whole" or "entire." The roots of the word can be traced back to Proto-Germanic aljan and Proto-Indo-European al- or *ol-, which convey the meaning of totality or completeness.