1. (

• ferocious ,
• fierce ,
• furious ,
• savage

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

2. (

• fierce ,
• tearing ,
• vehement ,
• violent ,
• trigger-happy

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

3. (

• cutthroat ,
• fierce ,
• bowelless

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

4. (

• boisterous ,
• fierce ,
• rough

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