Ya is the thirty-fifth most common word in the Spanish language.
This monosyllable is described in the dictionary as an adverb and a conjunction.
My trusty Collins English-Spanish dictionary has a variety of translations – but the key translation to remember is “already”. The dictionary, of course, then develops this translation a lot more, but, in essence, “already” is sufficient for our purposes.
Here is an example of the use of ya
Ya lo he visto – I have already seen it
Well, there it is the thirty-fifth most common word in the Spanish language. Short,nice and precise.