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Definitions

useful

[yoos-fuhl] / ˈyus fəl /
ADJECTIVE
beneficial, valuable
Synonyms
STRONGEST
advantageous appropriate convenient effective favorable fruitful good handy helpful practical pragmatic profitable proper suitable
STRONG
utile
WEAK
all-purpose applied brave commodious fit functional instrumental meet of assistance of service of use practicable propitious purposive salutary serviceable subsidiary suited toward
Antonyms
STRONGEST
awkward bad disadvantageous disagreeable harmful hurtful impotent improper inappropriate incapable inconvenient injurious misbehaving unacceptable unfitting unhandy unhelpful unproductive unskilled unsuitable unsuited useless worthless
WEAK
unusable unvaluable

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.

"For the newer GLP-1 medications, it would be useful to look at whether there are genetic variants, like the variants in PAM, that explain poor responders to their medications."

From Science Daily • Apr. 12, 2026

Because each prohormone can be split in many different ways, identifying useful peptide hormones using traditional lab methods is extremely challenging.

From Science Daily • Apr. 12, 2026

These wild species often have useful genes that make them resistant to pests and pathogens that the agriculturally bred species have lost.

From BBC • Apr. 11, 2026

AI can be very useful and time-efficient for financial matters.

From The Wall Street Journal • Apr. 10, 2026

Such useful advice after I’d already fallen out of a tower.

From "Rump: The (Fairly) True Story of Rumpelstilskin" by Liesl Shurtliff