cognizant

If you are cognizant of what's going on at the table behind you in the lunchroom, that means you know they're plotting to throw peas at your head. If you are cognizant of something, you are aware of or informed about it.

This 19th century adjective derives from Latin cognĊscere "to learn." For the English adjective and noun, an older pronunciation with a silent g was in use in legal contexts up until the early 20th century. In law, these terms refer to jurisdiction, or the right of a court to hear a case.

Definitions of cognizant
1

adj (sometimes followed by `of') having or showing knowledge or understanding or realization or perception

Synonyms:
aware, cognisant
awake
not in a state of sleep; completely conscious
alert, alive, awake
mentally perceptive and responsive;"an alert mind"
conscious
(followed by `of') showing realization or recognition of something
sensible
aware intuitively or intellectually of something sensed
witting
aware or knowing
conscious
knowing and perceiving; having awareness of surroundings and sensations and thoughts
sensible, sensitive
able to feel or perceive
Antonyms:
incognizant, unaware
(often followed by `of') not aware
asleep
in a state of sleep
oblivious, unmindful
(followed by `to' or `of') lacking conscious awareness of
unconscious
(followed by `of') not knowing or perceiving
unsuspecting
(often followed by `of') not knowing or expecting; not thinking likely
unwitting
not aware or knowing
unconscious
not conscious; lacking awareness and the capacity for sensory perception as if asleep or dead
insensible
incapable of physical sensation
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