If you're talking about the Hebrew language, it never fell. It died out as a spoken language around 200 BCE and was revived in the 1880's, but it never fell out of use. It has been used by Jews continuously for thousands of years.
to fall from = nafal meh... (× ×¤×œ מ־)
to fall from the heavens, or to fall from the sky = nafal mehashamayim (× ×¤×œ מהשמים)
to fall = nafal (× ×¤×œ) a fall (noun) = nefila (× ×¤×™×œ×”) Fall (the season) = stav (סתו)
to fall from heaven (or to fall from the sky) = nafal mehashamayim (× ×¤×œ מהשמיים)
Tomorrow night, September 17, 2009, it will be the year 5770! Shanah tovah! Fall 2010 - Fall 2011 is equivalent to 5771 Fall 2011 - Fall 2012 is equivalent to 5772 Fall 2012 - Fall 2013 is equivalent to 5773 Fall 2013 - Fall 2014 is equivalent to 5774 Fall 2014 - Fall 2015 is equivalent to 5775 Fall 2015 - Fall 2016 is equivalent to 5776
It depends on which era of Jewish history you are talking about.
Fall begins on the autumnal equinox, which can shift quite substantially on the Hebrew Calender between the years. Sometimes it is in late Elul and other times it is in late Tishrei and the remainder of Tishrei in times in between.
The tenth month in the Hebrew calendar is called "Tamuz". It usaually falls out around July time.
The Hebrew alphabet has 22 different letters, and any one of them can be at the end of a word. Five of them change shape when they fall at the end:×›, ךמ, ×× , ןפ, ףצ, ×¥
to fall = nafal. (fallen would just be the past tense form).
linpol meharamah (×œ× ×¤×™×œ מהרמה)
It is spelled 'hayah' and means to exist, fall out, come to pass.