Fierce in a sentence as an adjective

In fact I am quite fierce and get huge amounts of good work done, when I believe that what I am doing is important.

We are guessing that the fierce temperature was not taking it easy on the GPS trackers.

There is fierce competition and pressure, which is why it never surprised me that many of my fellow American- born Chinese peers ended up, in fact, doing this.

I have never seen a project anywhere make so many mistakes and then confront such simple, straightforward, observations as "SHA1 is by itself not a MAC" with fierce arguments.

This part seemed especially troubling:"But PopCaps founders worried about the companys reputation after hearing rumors of the companys rescinding share awards and fierce internal competition, said two people with first-hand knowledge of the situation.

Ioannides cataloged the flaws of much biomedical research, pointing out that reported studies are less likely to be true when they are small, the postulated effect is likely to be weak, research designs and endpoints are flexible, financial and nonfinancial conflicts of interest are common, and competition in the field is fierce.

Fierce definitions

adjective

marked by extreme and violent energy; "a ferocious beating"; "fierce fighting"; "a furious battle"

See also: ferocious furious savage

adjective

marked by extreme intensity of emotions or convictions; inclined to react violently; fervid; "fierce loyalty"; "in a tearing rage"; "vehement dislike"; "violent passions"

See also: tearing vehement violent trigger-happy

adjective

ruthless in competition; "cutthroat competition"; "bowelless readiness to take advantage"

See also: cutthroat bowelless

adjective

violently agitated and turbulent; "boisterous winds and waves"; "the fierce thunders roar me their music"- Ezra Pound; "rough weather"; "rough seas"

See also: boisterous rough