Gradually growing or persistent: a sneaking hunch. (adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "sneaking" in a sentence
"If you don't believe it, explain to me what you call sneaking into a public area of citizens who are completely unguarded, with a bomb strapped to yourself, and detonating that bomb with the intent to kill and impose fear upon those people?"
"And insofar as lawmakers are interested in sneaking some 2011 and 2012 transportation infrastructure spending into this bill they may as well forget about shovel readiness and identify useful transit and intercity rail projects."
"This has a lot to do with the fact that it such a amorphous and incoherent set of vague ideas, but also the fact that IDists seem to be more interested in sneaking their ideas straight into highschool textbooks, while attempting to dodge the peer-review process."