(a sound or signal given) a warning of danger

feeling of sudden fear

fear and uncertainty about the future

worry, tension

anxiety (the more usual word)

worry; mental upset

a disturbance of the nervous system, with outbursts of uncontrollable emotion; uncontrolled excitement, e.g. in a crowd round a pop star

state of extreme upset

the absence of patience

inability, unwillingness to wait

the state, quality, of being intense; strength (of feeling etc)

passion, force

a feeling of doubt (especially about whether one is doing or has done right); a temporary feeling of sickness in the stomach

nagging doubt

a state of anxiety

anxiety, worry