unflapped

un·flapped

 (ŭn-flăpt′)
adj.
Not upset or excited; calm: "went about her business outwardly unflapped" (Laurie Colwin).
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

unflapped

(ʌnˈflæpt)
adj
not agitated or excited
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
Above, below and on subsequent pages are cross-sections of five popular wing/flap designs, along with a basic, "unflapped" airfoil for comparison.
Noriyuki Haga, who had to avoid the flaming machines as he flew at them head on, seemed unflapped by the danger.
This is contrary to the following statement in Steriade (2000: 334) about the word Mediterranean: "I attribute the unflapped [t] in this unique form to the orthographic geminate 'rr', which is interpreted by speakers as an indication of secondary stress on the preceding vowel." Steriade's explanation, though, would fail to account for the unflapped (aspirated) [t] in Navratilova and Manitowoc as well as the fact that the vowel of the third syllable in Mediterranean is reduced.
To which wonderful revelations, Rufus responds in the unflapped way of the daddies of sons, "You'll have to bring in some topsoil, I imagine."