Definition of "tightlipped" [tightlipped]

• Having the lips pressed together. (adjective)
• Loath to speak; close-mouthed. See Synonyms at silent. (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.

• "The Obama campaign has fewer paid staff in Iowa than last election cycle, although they're tightlipped about exact numbers."
• "BERLIN – German officials are being tightlipped about details surrounding a U.S. missile strike in Pakistan's rugged mountain border area that Pakistani officials say killed five German militants."
• "Gone are the Jets 'tightlipped days of former coaching regimes, which likely never would have allowed cameras and microphones into meeting rooms."