from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun The upper side or portion.
  • noun An advantageous aspect.
  • noun An upward tendency, as in business profitability or in the prices of a stock.
  • preposition On.

from The Century Dictionary.

  • noun The upper side; the upper part.
  • On the upper side.

from the GNU version of the Collaborative International Dictionary of English.

  • noun The upper side; the part that is uppermost.
  • noun the benefits; the positive features; -- said of a situation or event that has both positive (good) and negative (bad) aspects.
  • noun [Prov. Eng. & Scot.] to be even with.
  • noun With the upper part undermost; hence, in confusion; in complete disorder; topsy-turvy.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun the highest or uppermost side or portion of something
  • noun a favourable aspect of something that also has an unfavourable aspect
  • noun an upward tendency, especially in a financial market etc
  • preposition informal On the top of.

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

  • noun the highest or uppermost side of anything


Sorry, no etymologies found.


    Sorry, no example sentences found.


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  • "As if that weren't enough, 'The Snowman' channel has joined the insanity! Yes, it's just this. A moving picture of a paralyzed snowman caught in a wintery scene with ghastly Christmas tunes urging him to slap himself upside the head. But he can't, you see, which is an interesting situation and one that holds my brain hostage for hours."

    - Maryann, 'Deranged Snowman and Caffeine Intoxication',, 6 Dec 2008.

    I have never heard this prepositional use of upside in Australian English.

    December 7, 2008

  • Being slapped upside the head is relatively common here--or I should say that the phrase is relatively common. :-)

    December 8, 2008

  • May I try it? Pleeassee?! *backflips*

    December 8, 2008

  • Try what? To slap me upside the head? I must warn you: I have powerful friends.

    December 8, 2008

  • *slaps himself upside the head*

    I'm not sure I'm doing this right.

    *slaps himself upside the head again*

    Oooh, yeah. I think there's something in it.

    December 8, 2008

  • Not bad! It does work much better when you slap someone else upside the head. However, please note that I am not volunteering.

    *slaps computer monitor upside the head*

    December 8, 2008

  • Hehe.

    January 13, 2009

  • So... I take it that not having heard of this phrase is an upside of living Down Under.

    December 24, 2010