American Heritage Dictionary
(4)
Century Dictionary
(1)
GNU Webster's 1913
(1)
WordNet
(3)
Elsewhere on the web
Ingram's deft, light-handed approach, generally a good thing, leaves it somewhat unclear how much of this slippage is conscious for Kuhler, but— Baltimore City Paper
We've slipped from being the world's leader in Internet access to number 15 and the slippage is still going on.— SeekingAlpha.com: Home Page
We were forewarned by their word slippage during the campaign of '08.— The Washington Times stories: Latest Headlines
DNA strand slippage is a general mechanism invoked to explain instability in TRSs.— CiteULike: Everyone's library
In a recent WSJ story titled "Freedom Is Still the Winning Formula", the reason given for our slippage is "because of increases in both tax revenue and government spending as a percentage of GDP."— Staff Blogs

Century Dictionary (1)
Bubble size: how much this word was used in a year
Bubble height: used more or less than expected, vs. all uses evenly distributed
You can expect to see this word several times a year.
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