The American Heritage® Dictionary of the English Language: Fourth Edition. 2000.
Appendix I
Indo-European Roots
ENTRY:
ne
DEFINITION:
Not. Derivatives include naughty, never, nothing, annul, nice, annihilate, negligee, deny, and renegade. 1a.naught, naughty, neither, never, nill, no1, no2, none, nor1, not, nothing, from Old English ne, not, and n, no; b.nay, from Old Norse ne, not; c.nix2, from Old High German ne,ni, not. a–c all from Germanic *ne-,*na-.2.annul, nefarious, nescience, neuter, nice, null, nullify, nullipara, from Latin ne-, not, and nllus, none (ne- + llus, any; see oi-no-). 3.nimiety, from Latin nimis, too much, excessively, very (< *ne-mi-s, “not little”; *mi-, little; see mei-2). 4.nihilism, nihility, nil; annihilate, from Latin nihil,nl, nothing, contracted from nihilum, nothing (< *ne-hlum, “not a whit, nothing at all”; hlum, a thing, trifle; origin unknown). 5. non-; nonplus, nonsuit, from Latin nn, not (< *ne-oinom, not one thing”; *oino-, one; see oi-no-). 6.nisi, from Latin nisi, unless (n, not, from *nei + s, if; see swo-). 7a.neglect, negligee, negotiate, from Latin prefix neg-, not; b.negate; abnegate, deny, renegade, renege, from Latin negre, to deny. Both a and b from Italic *nek, not. 8.nepenthe, from Greek n-, not. 9. Zero-grade combining form *-.a. (i) un-1, from Old English un-, not; (ii)Zugunruhe, from Old High German un-, not. Both (i) and (ii) from Germanic *un-;b. in-1, from Latin in-, not; c. a-1, an-, from Greek a-,an-, not; d.ahimsa, from Sanskrit a-,an-, not; e. compound *-m-to- (see mer-). (Pokorny 1. n 756.)
, no; b. nay, from Old Norse ne, not; c. nix2, from Old High German ne, ni, not. a–c all from Germanic *ne-, *na-. 2. annul, nefarious, nescience, neuter, nice, null, nullify, nullipara, from Latin ne-, not, and n
llus, none (ne- + 
l, nothing, contracted from nihilum, nothing (< *ne-h
n, not (< *ne-oinom, not one thing”; *oino-, one; see oi-no-). 6. nisi, from Latin nisi, unless (n
-, not. 9. Zero-grade combining form *
-. a. (i) un-1, from Old English un-, not; (ii) Zugunruhe, from Old High German un-, not. Both (i) and (ii) from Germanic *un-; b. in-1, from Latin in-, not; c. a-1, an-, from Greek a-, an-, not; d. ahimsa, from Sanskrit a-, an-, not; e. compound *
-to- (see mer-). (Pokorny 1. n
756.) 
