IPA: /ʌnˈkɒnʃənəbli/
KK: /ʌnˈkɑnʃənəbli/
In a way that is shockingly unfair or unjust; excessively or outrageously.
The company charged unconscionably high prices for their products.
Unconscionably → It is formed from "un-" (meaning not), "conscience" (from Latin *conscientia*, meaning knowledge or awareness), and "-ably" (meaning in a manner). The word describes an action done in a manner that is not in accordance with one's conscience or moral sense, often implying extreme or excessive behavior.
Think of 'not' ('un-') acting according to your 'awareness' ('conscience') — that's why unconscionably means acting in a way that goes against your moral sense.