Letters that make inexterminable
a, b, e, l, n, m, r, t, i, x are letters that make 'inexterminable'
Words within inexterminable
ER, term, AB, ab, mi, te, Min, XT, MI, nab, next, able, exterminable, ex, terminable, in, mina, IN, NE, LE, Er, In, Ne, Na, Te, Ab, min are words within 'inexterminable'