inmunitus

immūnītus ( inm- ), a, um, adj. [2. in-munitus], unfortified, undefended (rare but class.):

oppida castellaque,

Liv. 22, 11, 4:

Sparte,

Ov. M. 10, 169:

inermes atque immuniti abscondimus,

App. M. 8, p. 202 fin.:

via,

i. e. not properly made, impassable, Cic. Caecin. 19, 54.