1. in a way that causes physical discomfort or unease
2. in a way that causes mental or emotional discomfort; awkwardly
3. to an unpleasant or worrying degree

Examples

• The chair was uncomfortably hard after sitting for hours.
• She shifted uncomfortably when asked about her grades.
• The room was uncomfortably hot and stuffy.
• He laughed uncomfortably at the inappropriate joke.
• The silence stretched uncomfortably between them.
• The results were uncomfortably close to our worst predictions.
• She stood uncomfortably close to the edge of the cliff.