-id

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-id1 suffix repr. F. -ide — L. -idus, -ida, -idum, used to form adjs. chiefly from vbs. with ē-stems, as acidus ACID, f. acēre, torridus TORRID, f. torrëre, less freq. from others, as fluidus FLUID, f. fluere, and from sbs., as morbidus MORBID, f. morbus.