| ingeminate(verb, sound, say, pronunciation) | |
| initial(verb, check, mark, stain, blemish) | |
| ink(verb, check, mark, stain, blemish) | |
| inscribe(verb, cut, mark, touch, follow) | |
| insist on(expression, charge, mark, maintain, hit) | |
| interlineate(verb, mark, emphasize) | |
| iterate(verb, sound, say, pronunciation) | |
| jot | |
| label(verb, check, mark, stain, blemish) | |
| lay stress on(verb, phrasal verb, importance) | |
| lend a hand(verb, expression, idiom, support, increase) | |
| letter(verb, check, mark, stain, blemish) | |
| maintain(verb, charge, mark, hit, assert) | |
| make a mark(expression, idiom) | |
| make a will(expression, idiom) | |
| make much of(expression, idiom, charge, mark, maintain) | |
| mottle | |
| multiply(verb, support, increase, boost, sustain) | |
| notch | |
| overaccentuate |
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| APA | Smart Define. (2015). underline thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/underline/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "underline thesaurus" https://smartdefine.org/underline/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, underline thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/underline/thesaurus/synonyms>. |
| MLA | Smart Define. "underline thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/underline/thesaurus/synonyms> |