1. in a way that is harmful to one’s health or well-being
2. to an excessive or abnormal degree

Examples

• She was eating unhealthily, consuming only fast food and sugary snacks.
• The children were living unhealthily in the polluted environment.
• He became unhealthily obsessed with checking his social media accounts.
• The family was unhealthily dependent on processed foods.
• She was unhealthily thin after months of poor nutrition.
• The workplace culture encouraged unhealthily long working hours.