adj. 25B6; adjective
the unconscionable use of test animals : UNETHICAL, amoral, immoral, unprincipled, indefensible, wrong; unscrupulous, unfair, underhand, dishonourable.
we had to wait an unconscionable time : EXCESSIVE, unreasonable, unwarranted, uncalled for, unfair, inordinate, immoderate, undue, inexcusable, unnecessary, needless; informal over the top, OTT.
ethical, acceptable.