Mawson, C.O.S., ed. (1870–1938). Roget’s International Thesaurus. 1922.

Class IV. Words Relating to the Intellectual Faculties
Division (II) Communication of Ideas
Section III. Means of Communicating Ideas
Various Qualities of Style

575. Feebleness.

   NOUN:FEEBLENESS &c. adj.; enervation, flaccidity, vapidity, poverty, frigidity.
   ADJECTIVE:FEEBLE, bald, tame, meager or meagre, insipid, watery, nerveless, jejune, vapid, trashy, cold, frigid, poor, dull, dry, languid; colorless, enervated; prosing, prosy, prosaic, unvaried, monotonous, weak, washy, wishy-washy [colloq.], sloppy, sketchy, slight; careless, slovenly, loose, disjointed, disconnected, lax; slipshod, slipslop; inexact; puerile, childish; flatulent; rambling (diffuse) [See Diffuseness].