Noun
upset [pl. upsets]
discomfort [pl. discomforts]
worry [pl. worries]
inconvenience {feelings & emotions}
tension {feelings & emotions}
malaise [pl. malaises]
vexation [pl. vexations]
trouble [pl. troubles]
uneasiness [pl. uneasinesses]
disquietude [pl. disquietudes]
disturbance [pl. disturbances]
suspense {feelings & emotions}
strain {feelings & emotions}
tensity {feelings & emotions}
unquietness {feelings & emotions}