1. in a savage, violent, or cruel manner; without mercy or compassion
2. in a coarse, crude, or unrefined manner; like a brute or animal

Examples

• The dictator ruled brutishly, crushing all opposition without hesitation.
• He ate brutishly, stuffing food into his mouth without regard for manners.
• The invaders treated the conquered people brutishly, showing no mercy.
• She spoke brutishly to her employees, using harsh language and insults.
• The animal attacked brutishly, driven by hunger and instinct.
• He laughed brutishly at the misfortune of others.