American Heritage Dictionary
(3)
Century Dictionary
(1)
GNU Webster's 1913
(1)
WordNet
(1)
Elsewhere on the web
While their involvement hasn't been confirmed anywhere else, this certainly could be the— Cinematical
This certainly could be the case but this off-season, the Yankees targeted Sabathia, Burnett— THE BASEBALL SAVANT
This certainly is a different climate than on the coast as when it's - 10C and the rain showers down in sheets in Iowa, it forms an instant layer of translucent and dangerously slick ice that coats every surface outdoors.— Vancouver Blog Miss 604 by Rebecca Bollwitt
"This certainly is an issue of concern, but the probability of a major cyber event taking place on April 1 is really not very likely," said Vincent Weafer, vice president of Symantec Security Response.— Microsoft Certified Professional Magazine Online | News
This certainly is a far cry from what we once were.— The New American

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 day.
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