Multi-, Mult-, many, as in multiply, multeity. [L. multus, much, many.]
N-, as in newt, nickname, due to the n of the article in an ewt, an ekename. In nuncle the origin is mine uncle; in 'for the nonce,' M. E. for the nones, miswritten for then ones, for the once.
N- (A.S.), no, not, as never; or L. ne-, as in null. [A.S. ne; cog. with Goth. ni, L. ne, Sans. na.]
Ne- (Gr.), not, as nepenthe; Ne-, Neg- (L.), not, as nefarious, neuter, negative, neglect. [L. ne, nec, a contr. of neque, from ne, not, que, and.]
Non- (L.), not, as nonsense, nonage. It appears as um- in umpire=numpire. [From ne unum, not one.]
Ob- (L., by assimilation, o-, ob-, oc-, of-, op-, also os-), in front of, against, in the way of, as obstruct, omit, occur, offer, oppose, ostentation. [Cog. with Gr. epi, Sans. api.]
Oc-, as in occur. See Ob-.
Of-, as in offer. See Ob-.
Off- (A.S.), off, from, away, as offal, offshoot, offset. [A form of Of. There is the same relation between of and off as between be and by; A.S. of has been differentiated into the stressless or weak form of, and the stressed or strong form off. Cf. A-, Ab-.]
On- (A.S.), on, as onset, onlooker. [See On in Dict.]