UNAWARE
ADJECTIVES
1914 — ASLEEP AT THE SWITCH off one’s guard; unaware or unwary; derelict in one’s duty → Amer. sl., orig. railroad usage
1930 — UNHEP — UNHIP unaware, unsophisticated, ignorant → sl., orig. US
1930 — UNHIPPED unaware, unsophisticated, ignorant → sl., orig. US
1935 — LAME socially unsophisticated; naive; ‘square’; hence, easily imposed upon; stupid; inept; ineffectual; incompetent; unaware; inexperienced → US sl., esp. African-American
1940 — UNGROOVY unsophisticated, unaware → African-American usage
1955 — OUT TO LUNCH insane; stupid, unaware; socially unacceptable → US sl.
1966 — NUMB dull, stupid, dumb; clumsy; not very alert or unaware → Amer. dial.
1970 — LUNCHED-OUT dazed, unaware, stupid → US sl.
2006 — DITSY — DITZY giddy; unaware; flighty → US sl. (Bk.)
ADVERBS
1489 — UNBEWARE unaware → obs.
NOUNS – PERSON
1962 — DINK a clueless, unaware person → US sl.
1965 — DULLHEAD a person who is not very alert or aware of things → Amer. dial.
1976 — GOOCH an inept, unaware person → US sl.
1990 — NUTTER BUTTER a person who is unaware or inattentive → US students’ sl.
PHRASES
1944 — HAVE YOUR HEAD UP YOUR ASS stupid, unaware, uninformed → US sl.
1972 — WOULDN’T KNOW IF A TRAM WAS UP YOU to be docilely unaware → Aust. sl.
1983 — LIGHTS ARE ON BUT NOBODY’S HOME, THE said of a person who is dazed, stupid, or unaware → Amer. sl.
1990 — ALL UP IN THE KOOLAID WITHOUT KNOWING THE FLAVOUR ignorant, unaware; used to tell off an inquisitive person → African-American sl.
VERBS
1825 — CATCH A WEASEL ASLEEP to take a shrewd person off his guard; to catch off guard or unaware; to surprise → Amer. dial.
1843 — CATCH A DUCK ASLEEP to take a shrewd person off his guard; to catch off guard or unaware; to surprise → Amer. dial.
1968 — SLIP A CLUTCH to be unaware; to be backward → US students’ sl. (Bk.)
1980 — LUNCH to lack concentration, to be unaware → US students’ sl.
Lexicophilia 