Insomniac

[ɪn'sɒmnɪæk]

解释:

(noun.) someone who cannot sleep.

(adj.) experiencing or accompanied by sleeplessness; 'insomniac old people'; 'insomniac nights'; 'lay sleepless all night'; 'twenty watchful, weary, tedious nights'- Shakespeare .

黛拉校对--From WordNet