adj. being intentionally concealed so as to deceive
adj. happening later; subsequent
the GNU version of the Collaborative International Dictionary of English
adj. Situated beyond, or on the farther side; thither; -- correlative with hither.
adj. Further; remoter; more distant; succeeding.
n. Ulterior side or part.
The Century Dictionary and Cyclopedia
Being or situated beyond or on the further side of any line or boundary.
Not at present in view or in consideration; in the future or in the background; beyond what is seen or avowed; remote: as, what ulterior measures will be adopted is uncertain.
n. The further side; the remote part. Coleridge.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. lying beyond what is openly revealed or avowed (especially being kept in the background or deliberately concealed)
adj. beyond or outside an area of immediate interest; remote
adj. coming at a subsequent time or stage
Word Usage
"Which, come to think of it, is probably the main ulterior reason that I can't imagine doing the 48 hour book challenge ..."