fierce

[feers] / fɪərs /

ADJECTIVE

violent, menacing

Synonyms

STRONGEST

angry bold brutal cutthroat dangerous ferocious fiery furious intense murderous passionate powerful raging relentless savage stormy strong terrible vehement vicious

WEAK

animal ape awful barbarous bloodthirsty blustery boisterous brutish cruel enraged fell feral flipped frightening horrible howling impetuous infuriated malevolent malign primitive raving tempestuous threatening tigerish truculent tumultuous uncontrollable untamed venomous wild

Antonyms

STRONGEST

apathetic calm cold cool dull gentle good happy indifferent kind mild moderate nice pleasant quiet tame uncaring unpassionate weak

WEAK

meek nonviolent peaceful tender unthreatening

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.

OpenAI has offered nine major UK banks access to its cyber security AI tool GPT-5.5 Cyber, as its fierce rival Anthropic has blocked them in previews of its version, Claude Mythos.

From BBC • Jun. 1, 2026

Throughout his career, he was a fierce, joyful advocate for interfaith coexistence.

From Salon • Jun. 1, 2026

Artificial intelligence has also triggered fierce competition for top talent and is also fueling tens of thousands of layoffs this year.

From Los Angeles Times • May 29, 2026

The arrangement has drawn fierce opposition from Kenyan medical groups.

From The Wall Street Journal • May 28, 2026

“When Itza’s father sent Popoca off to war, the evil priest, plotting for his own son to wed Izta, lied and told Izta that Popoca had died in a fierce battle.”

From "The Last Cuentista" by Donna Barba Higuera

Vocabulary lists containing fierce

Beowulf vocabulary

Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide!

Where the Mountain Meets the Moon

Interested in learning more words like this one? Our team at Vocabulary.com has got you covered! You can review flashcards, quiz yourself, practice spelling, and more – and it's all completely free to use!

Excerpt from "Flipped"

Want to remember this word for good? Start your learning journey today with our library of interactive, themed word lists built by the experts at Vocabulary.com – we'll help you make the most of your study time!