Also, in⋅im⋅i⋅ca⋅ble.
Origin: 1635–45; < L
inimīc(
us) unfriendly, hostile (
see enemy ) +
-al 1 
Related forms: in⋅im⋅i⋅cal⋅ly, adverb
in⋅im⋅i⋅cal⋅ness, in⋅im⋅i⋅cal⋅i⋅ty, noun
Synonyms:1. noxious.
2. antagonistic.
See hostile. Antonyms:
2. friendly.