Of sleep: deep, sound, unbroken. Of a person: in a deep sleep; = fast asleep at fast, adv. int.phrases 1a(a). Now rare except in fixed…

Of conditions or qualities: present to a high degree. Also: relating to such conditions or qualities. Of sleep: deep, sound.

Of sleep: sound, deep. Obsolete.

Said esp. of sleep, silence, and similar conditions, in which one may be deeply plunged or immersed.

Of sleep, etc.: Deep, heavy, profound; unbroken or undisturbed.

(un-, prefix1 affix 4.)

Without awakening, unbroken, undisturbed.

Of sleep, silence, etc.: in which a person is or may be deeply immersed; unbroken, complete.

(un-, prefix1 affix 4.)

(un-, prefix1 affix 4.)