natural
nonchalant
Natter
needy
navy
Navigating.
The word you are looking for is probably - legerdemain. Another synonym for sleight of hand is - Prestidigitation.
The words could be negligent (failing to observe care) or nonchalant (apathetic).
naughty
That is the correct spelling of uninhabited (vacant, desolate, unpopulated).The similar word is uninhibited (unrestrained, unreserved, spontaneous).
No, except at the beginning of a sentence because it is n ot a proper n ou n.
Notice
Nemisis
Ninja.