Lunatic
nOne word substitutionSSC PYQ × 5/lˈuːnətɪk/ · लूनटिक
One who is mentally not sound
पागल, विक्षिप्त व्यक्ति
In old times, a lunatic was thought to be affected by the moon.
The word lunatic came from a belief about the moon.
Daily use: Lunatic plan tha, koi backup nahi.
सोचिए, सबसे सीधा-सादा, नैतिक लड़का अचानक अजीब हरकतें करने लगे और लोग बोलें — 'लो, नैतिक पागल हो गया!' लो नैतिक = Lunatic। Lunar (चाँद) से भी link — पहले माना जाता था कि चाँद से पागलपन होता है।
Imagine the most well-behaved, moral (naitik) boy suddenly behaving wildly, and everyone says 'lo, naitik pagal ho gaya' (look, the moral one has gone mad). 'Lo naitik' sounds like lunatic. Lunar (moon) is linked too: people once believed the moon caused madness.
'Mentally not sound' = Lunatic; synonym insane, deranged; antonym sane, rational; noun lunacy।
Lunatic is asked for 'one who is mentally not sound'; Insane and Deranged are synonyms, Sane and Rational are antonyms, and the noun Lunacy is also used.