from The American Heritage® Dictionary of the English Language, 4th Edition
- Not: dissimilar.
- Absence of: disinterest.
- Opposite of: disfavor.
- Undo; do the opposite of: disarrange.
- Deprive of: disfranchise.
- Remove: disbud.
- Free from: disintoxicate.
- Used as an intensive: disannul.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- reversal or removal
- Used as an intensifier of words with negative valence.
from the GNU version of the Collaborative International Dictionary of English
- A prefix from the Latin, whence F. dés, or sometimes dé-, dis-. The Latin dis-appears as di-before b, d, g, l, m, n, r, v, becomes dif-before f, and either dis-or di- before j. It is from the same root as bis twice, and duo, E. two. See two, and cf. bi-, di-, dia-. Dis- denotes separation, a parting from, as in distribute, disconnect; hence it often has the force of a privative and negative, as in disarm, disoblige, disagree. Also intensive, as in dissever.
- A prefix from Gr. di`s- twice. See Di-.
Middle English, from Old French des-, from Latin dis-, apart, asunder.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Middle English, from Old French des-, from Latin dis-. (Wiktionary)