Letters that make preternatural
a, e, l, n, p, r, t, u are letters that make 'preternatural'
Words within preternatural
ER, rete, re, te, PR, RN, at, natural, ern, tern, RA, Ur, AL, Ra, Re, Al, At, Er, Pr, Rn, Na, Te, RNA, ret are words within 'preternatural'