underline
verb (used with object)
to mark with a line or lines underneath; underscore.
underlined
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past participleof underline.past participle
A verb form used in perfect and passive verb constructions and that can also function as a modifier.
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past tense formof underline.past tense
Used to describe completed actions or previous habitual actions.
underlineverb (used with object)to mark with a line or lines underneath; underscore.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
A recent Stanford University report underlined the practical and ethical challenges around deploying robots in battlefields.
From The Wall Street Journal ● Sep. 14, 2026
He underlined his position as one of the sport's biggest draws when he boldly announced his record-breaking intentions months in advance before delivering his historic mile performance in front of 60,000 British fans in July.
From BBC ● Sep. 13, 2026
In his statement, Wirth underlined the role of artificial intelligence in establishing traditional hydrocarbon energy as no longer scarce or costly.
From The Wall Street Journal ● Sep. 4, 2026
That underlined a boom in tourist arrivals in Greece, which last year were 23 percent higher than the 2019 pre-Covid peak, at 38 million, in a country of around 10 million people.
From Barron's ● Aug. 23, 2026
The 34 was in red, underlined, and circled.
From "Slam!" by Walter Dean Myers
