(n.) Sleeplessness.

advertence advertency alertness all-night vigil apperception appreciation appreciativeness assiduity assiduousness attention attention span attentiveness awareness brain care carefulness cognition cognizance concentration concern consideration diligence ear earnestness experience faculties feeling head heed heedfulness insight insomnia insomniac insomnolence insomnolency intellect intellectual gifts intellectuals intelligence intentiveness intentness lidless vigil mentality mindfulness noesis note notice observance observation parts percept perception realization recognition regard regardfulness remark respect response response to stimuli restlessness sensation sense sense impression sense perception senses sensibility sensory experience sentience sleeplessness thought tossing and turning vigil wake wakefulness wise man wits