[strengk-thuhn, streng-, stren-]

verb (used with object)

to make stronger; give strength to.
Phonetics. to change (a speech sound) to an articulation requiring more effort, as from fricative to stop or nongeminate to geminate.

verb (used without object)

to gain strength; grow stronger.

Nearby words

  1. strega,
  2. streicher,
  3. streisand,
  4. strelitzia,
  5. strength,
  6. strengthless,
  7. strengthlessly,
  8. strenuosity,
  9. strenuous,
  10. strenuously

Origin of strengthen

First recorded in 1250–1300, strengthen is from the Middle English word strengthnen. See strength, -en1

Related forms Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for strengthening

British Dictionary definitions for strengthening



to make or become stronger
Derived Formsstrengthener, noun

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for strengthening



c.1300, from strength + -en (1). Related: Strengthened; strengthening.

Online Etymology Dictionary, © 2010 Douglas Harper