lunatic
noun
[ ˈluːnətɪk ]
• a person who is mentally ill (not in technical use).
Similar:
maniac,
madman,
madwoman,
psychopath,
psychotic,
loony,
loon,
nut,
nutcase,
nutjob,
cuckoo,
head case,
headbanger,
screwball,
psycho,
nutter,
radge,
wing nut,
have a screw loose,
have bats in the/one's belfry,
mad,
insane,
mentally ill,
certifiable,
deranged,
demented,
of unsound mind,
out of one's mind,
not in one's right mind,
sick in the head,
not together,
crazy,
crazed,
non compos mentis,
unbalanced,
unhinged,
unstable,
disturbed,
distracted,
stark mad,
manic,
frenzied,
raving,
distraught,
frantic,
hysterical,
delirious,
psychopathic,
mad as a hatter,
mad as a March hare,
foaming at the mouth,
sectionable,
mental,
off one's head,
out of one's head,
off one's nut,
nuts,
nutty,
nutty as a fruitcake,
off one's rocker,
not (quite) right in the head,
round the bend,
stark raving mad,
raving mad,
bats,
bonkers,
cracked,
loopy,
bananas,
loco,
dippy,
screwy,
schizoid,
touched,
gaga,
off the wall,
not all there,
not right upstairs,
barmy,
crackers,
barking,
barking mad,
stark staring mad,
dotty,
batty,
round the twist,
off one's trolley,
as daft as a brush,
not the full shilling,
up the pole,
away with the fairies,
buggy,
nutsy,
nutso,
out of one's tree,
meshuga,
squirrelly,
wacko,
bushed,
yarra,
lunatic
adjective
• mentally ill (not in technical use).
• "a ward of lunatic old ladies"
Origin:
Middle English: from Old French lunatique, from late Latin lunaticus, from Latin luna ‘moon’ (from the belief that changes of the moon caused intermittent insanity).
