vexation, trouble, care, distress, headache, concern, mind, dwell, occupy, interest, more...

calm, peace, serenity, tranquility, confidence

anxiety, concern, fear, stress, unease, apprehension, doubt, panic, paranoia, more...

constant, much, only, great, main, biggest, real, excessive, least, major, financial

fret and stew,   be anxious,   cause anxiety,   cause for concern,   anxiety or stress,   major concern,   feeling of anxiety,   fret not,   anxious thoughts,   state of anxiety