1. in a complete and obvious way; utterly
Usage: formal; often used to emphasize negative qualities

Examples

• The politician’s claims were arrantly false.
• She was arrantly dishonest about her qualifications.
• His behavior at the meeting was arrantly unprofessional.
• The company made arrantly misleading statements to investors.
• The student’s excuse was arrantly absurd.
• They showed arrantly poor judgment in their decision.