adj. fee·bler, fee·blest
a. Lacking bodily strength; weak: too feeble to climb the hill.
b. Having little intensity or strength; faint: feeble light; a feeble voice.
2. Having little capacity to withstand pressure or strain: the castle's feeble defenses.
a. Lacking vigor or effectiveness; inadequate: a feeble attempt to apologize.
b. Showing little activity: a feeble housing market. See Synonyms at weak.
[Middle English feble, from Old French, from Latin flēbilis, lamentable, from flēre, to weep.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.