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a. Suffering from constipation.
b. Causing constipation.
2. Slow; sluggish.
[Middle English costif, from Old French costeve, past participle of costever, to constipate, from Latin cōnstīpāre; see constipate.]
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.