Ill-considered and Subhuman

Ill-considered adjective - Not given careful consideration.

Subhuman and ill-considered are semantically related. In some cases you can use "Subhuman" instead an adjective phrase "Ill-considered".

Subhuman adjective - Having or showing the nature and appetites of a lower animal.

Ill-considered and subhuman are semantically related. Sometimes you can replace phrase "Ill-considered" with "Subhuman", this terms are similar.