(WORRY) [verb] -tt- - to worry or be unhappy (about something)Don't fret - I'm sure he's OK. [I]She spent the day fretting about/over whether James had missed his plane or not. [I]He's fretting that he's going to fail his exams. [+ (that) clause]"Whatever can have happened?" she fretted. [+ speech]
FRET
Meaning of FRET in English
Cambridge English vocab. Кембриджский английский словарь. 2012