Third-person singular simple present indicative form of understate.(verb)
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Use "understates" in a sentence
"The surprise -- and even that word understates it -- nomination of Alvin Greene, an unemployed man who lives with his parents, as the Democratic nominee in the South Carolina Senate race has captivated the country."
"The “five-tool” designation understates his skills by ignoring his intelligence, preparation, and guile."
"Just a few months after the iPhone appeared, Apple introduced the very similar iPod Touch, which didn't get as much attention, perhaps because its name understates the scope of its features."