| intense | |
| keen | |
| key up(verb, expression, promote, encourage, stimulate) | |
| level off | |
| madden | |
| pick up(verb, expression, advance, increase, develop) | |
| place | |
| polish(verb, study, change, work, fix) | |
| pore | |
| prepare(verb, study, work, show, develop) | |
| progress(verb, advance, increase, develop, raise) | |
| provoke(verb, promote, encourage, stimulate, excite) | |
| raise(verb, advance, increase, develop, correct) | |
| recover(verb, advance, increase, develop, raise) | |
| renew | |
| rivet(meet, direct, put, concentrate, focus) | |
| season(verb, study, develop, improve, prepare) | |
| sensitise | |
| sharpened | |
| sharpening |
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| APA | Smart Define. (2015). sharpen thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/sharpen/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "sharpen thesaurus" https://smartdefine.org/sharpen/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, sharpen thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/sharpen/thesaurus/synonyms>. |
| MLA | Smart Define. "sharpen thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/sharpen/thesaurus/synonyms> |