Dissemble

1. v. i. To conceal the real fact, motives, /tention, or sentiments, under some pretense; to assume a false appearance; to act the hypocrite.
2. v. t. To hide under a false semblance or seeming; to feign (something) not to be what it really is; to put an untrue appearance upon; to disguise; to mask.
3. v. t. To put on the semblance of; to make pretense of; to simulate; to feign.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.