different between strengthen vs stiffen

English

Etymology

From rare Middle English strengthenen (14th c.), from earlier strengthen (12th c.), where -en is the infinitive ending. Probably the original form was reinterpreted as strength +? -en around the time when the infinitive ending was being apocopated in late Middle English.

Pronunciation

• IPA^(key): /?st???(k)??n/, /?st??n??n/

Verb

strengthen (third-person singular simple present strengthens, present participle strengthening, simple past and past participle strengthened)

1. (transitive) To make strong or stronger; to add strength to; to increase the strength of; to fortify.
   • c. 1600, William Shakespeare, Henry IV, Part 2

     Let noble Warwick, Cobham, and the rest, […]
     With powerful policy strengthen themselves.

   • 1851, Anonymous, Arthur Hamilton, and His Dog

     A little hardship, and a little struggling with the rougher elements of life, will perchance but strengthen and increase his courage, and prepare him for the conflicts and struggles of after years.

2. (transitive) To empower; to give moral strength to; to encourage; to enhearten.
   • 1769, The King James Bible, Deuteronomy iii. 28

     Charge Joshua, and encourage him, and strengthen him.

   • "A fine man, that Dunwody, yonder," commented the young captain, as they parted, and as he turned to his prisoner. "We'll see him on in Washington some day. He is strengthening his forces now against Mr. Benton out there. […]."

3. (transitive) To augment; to improve; to intensify.
4. (transitive) To reinforce, to add to, to support (someone or something)

5. (transitive) To substantiate; to corroborate (a belief, argument, etc.)

6. (intransitive) To grow strong or stronger.

Synonyms

• (to make strong or stronger): See also Thesaurus:strengthen
• (to augment): See also Thesaurus:augment

Antonyms

• weaken
• atrophy

Derived terms

• strengthener

Translations

References

• strengthen in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.

Middle English

Alternative forms

• strenkþen, strengþen, strengþe, strengþi, strengthe, strenght, strenthe, streynght, streynthyn, streyngthe
• (early) strengðden, strengþin, strencþen

Etymology

From strengthe +? -en.

Pronunciation

• IPA^(key): /?str?nk??n/, /?str?n?ð?n/
• (dialectal) IPA^(key): /?str?n??n/, /?str?i?n??n/

Verb

strengthen

1. to strengthen, fortify (increase the strength of)
   • 1395, John Wycliffe, Bible, Job IV:

     Lo! thou hast tau?t ful many men, and thou hast strengthid hondis maad feynt.

2. to empower, to augment (increase the potency or severity of)
3. to enhearten, to encourage (increase the morale of)
4. to assist, to support (someone or something)
5. to substantiate; to corroborate (a belief, argument, etc.)
6. to approve or validate (a document).
7. to endeavour; to rouse oneself.

   (Can we find and add a quotation of Chaucer to this entry?)

Conjugation

Descendants

• English: strength

References

• “strengthen, v.”, in MED Online, Ann Arbor, Mich.: University of Michigan, 2007.

English

Etymology

From Middle English stifnen, equivalent to stiff +? -en.

Pronunciation

• IPA^(key): /?st?f?n/
• Rhymes: -?f?n

Verb

stiffen (third-person singular simple present stiffens, present participle stiffening, simple past and past participle stiffened)

1. (transitive) To make stiff.
2. (intransitive) To become stiff.

Synonyms

• starken

Derived terms

• stiffen up

Related terms

• stiff

Translations

Anagrams

• infefts