Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Having the qualities of soap.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Resembling soap; having the qualities of soap; soapy.
  • adj. Slippery, evasive

from the GNU version of the Collaborative International Dictionary of English

  • adj. Resembling soap; having the qualities of soap; soapy.

from The Century Dictionary and Cyclopedia

  • Soapy; resembling soap; having the properties of soap. Saponaceous bodies are compounds of an acid and a base, and are in reality a kind of salts.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. resembling or having the qualities of soap

Etymologies

Latin sāpō, sāpōn-, hair dye; see saponin + -aceous.
(American Heritage® Dictionary of the English Language, Fourth Edition)
Latin sapo, -onis, soap; of Teutonic origin, and akin to English soap. See Soap (Wiktionary)

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