4
aculeate
4
animate(verb, promote, encourage, stimulate, excite)
4
step up(verb, expression, advance, increase, raise)
4
stroke(verb, whet, hone, knifelike)
3
annoy
3
exaggerate(verb, advance, increase, raise, rise)
3
inflame(verb, promote, encourage, stimulate, excite)
3
pique
3
redouble(verb, advance, increase, raise, rise)
3
smooth
3
worsen(verb, rub, sting)
3
build up(verb, expression, study, work, advance)
3
charge
3
direct(verb, meet, show, develop, prepare)
3
double(verb, advance, increase, raise, rise)
3
foment(verb, promote, encourage, stimulate, excite)
3
heat up(verb, expression, increase, raise, severe)
3
invigorate
3
make acute(verb, expression, strop, whet, hone)
3
pointed
11 years ago|11k views|share |citing 
APASmart Define. (2015). sharpen thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/sharpen/thesaurus/synonyms
ChicagoSmart Define. 2015. "sharpen thesaurus" https://smartdefine.org/sharpen/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, sharpen thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/sharpen/thesaurus/synonyms>.
MLASmart Define. "sharpen thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/sharpen/thesaurus/synonyms>