Source : Webster's Revised Unabridged Dictionary (1913)

Insalubrious \In`sa*lu"bri*ous\, a. [Pref. in- not + salubrious:
   cf. L. insalubris, F. insalubre.]
   Not salubrious or healthful; unwholesome; as, an insalubrious
   air or climate.

Source : WordNet®

insalubrious
     adj : detrimental to health [syn: {unhealthful}, {unhealthy}]