Worry/ˈwɜːri/ Definition 1 of 4Pro Tip 1/3Uncertain Future Use 'worry' when concerned about something that might happen later, not sure if it will. I worry that it might rain during our picnic. Pro Tip 2/3Emotional Weight Expressing worry about serious matters indicates deep care or fear about the issue. Parents often worry about their children's health. Pro Tip 3/3Extended Concern Worrying can be ongoing, it doesn't always resolve quickly or easily. She has been worrying about her job interview for weeks.