SHARPEN
focus, focalize, focalise, sharpen
(verb) put (an image) into focus; “Please focus the image; we cannot enjoy the movie”
sharpen
(verb) become sharp or sharper; “The debate sharpened”
sharpen
(verb) make crisp or more crisp and precise; “We had to sharpen our arguments”
sharpen, heighten
(verb) make (one’s senses) more acute; “This drug will sharpen your vision”
sharpen, taper, point
(verb) give a point to; “The candles are tapered”
sharpen
(verb) raise the pitch of (musical notes)
sharpen
(verb) make sharp or sharper; “sharpen the knives”
sharpen
(verb) make (images or sounds) sharp or sharper
Source: WordNet® 3.1
Etymology
Verb
sharpen (third-person singular simple present sharpens, present participle sharpening, simple past and past participle sharpened)
(transitive, sometimes, figurative) To make sharp.
(intransitive) To become sharp.
Synonyms
• hone (figurative sense)
• whet
Antonyms
• blunt
• blur
Anagrams
• pherans
Source: Wiktionary
Sharp"en, v. t. [imp. & p. p. Sarpened; p. pr. & vb. n. Sharpening.]
Etym: [See Sharp, a.]
Definition: To make sharp. Specifically:
(a) To give a keen edge or fine point to; to make sharper; as, to
sharpen an ax, or the teeth of a saw.
(b) To render more quick or acute in perception; to make more ready
or ingenious.
The air . . . sharpened his visual ray To objects distant far.
Milton.
He that wrestles with us strengthens our nerves and sharpens our
skill. Burke.
(c) To make more eager; as, to sharpen men's desires.
Epicurean cooks Sharpen with cloyless sauce his appetite. Shak.
(d) To make more pungent and intense; as, to sharpen a pain or
disease.
(e) To make biting, sarcastic, or severe. "Sharpen each word." E.
Smith.
(f) To render more shrill or piercing.
Inclosures not only preserve sound, but increase and sharpen it.
Bacon.
(g) To make more tart or acid; to make sour; as, the rays of the sun
sharpen vinegar.
(h) (Mus. ) To raise, as a sound, by means of a sharp; to apply a
sharp to.
Sharp"en, v. i.
Definition: To grow or become sharp.
Source: Webster’s Unabridged Dictionary 1913 Edition