1. A false boasting or claim, especially one detrimental to the interests of another.
2. Extreme restlessness or tossing in bed, as can occur with some forms of acute disease.
[Medieval Latin iactitātiō, iactitātiōn-, false declaration, from Latin iactitātus, past participle of iactitāre, to utter, frequentative of iactāre, to boast, frequentative of iacere, to throw; see yē- in the Appendix of Indo-European roots.]
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