| blot(verb, mark, draw, stain, blemish) | |
| bolster(verb, support, increase, boost, sustain) | |
| bone up(verb, sound, say, pronunciation) | |
| boost(verb, support, increase, sustain, uphold) | |
| bracket(verb, mark, emphasize) | |
| bruise(verb, check, mark, stain, blemish) | |
| build up(verb, expression, support, increase, sustain) | |
| buttress(verb, support, increase, sustain, uphold) | |
| carry(verb, support, increase, boost, sustain) | |
| chalk up | |
| charge(mark, maintain, assert, stress, highlight) | |
| chorus(verb, sound, say, pronunciation) | |
| cicatrize | |
| come again(verb, sound, say, pronunciation) | |
| come back(verb, sound, say, pronunciation) | |
| copy(verb, sound, say, pronunciation) | |
| crease | |
| cross-hatching | |
| dapple | |
| deepen(verb, intensify) |
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| APA | Smart Define. (2015). underline thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/underline/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "underline thesaurus" https://smartdefine.org/underline/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, underline thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/underline/thesaurus/synonyms>. |
| MLA | Smart Define. "underline thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/underline/thesaurus/synonyms> |