1. in a way that causes minor but persistent annoyance or worry

Examples

• The loose thread nigglingly bothered her throughout the meeting.
• He was nigglingly aware that something was wrong with the calculations.
• The small error nigglingly undermined her confidence in the report.
• She found herself nigglingly worried about the upcoming presentation.
• The detail nigglingly nagged at him all day.
• The problem nigglingly persisted despite their efforts to fix it.