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adj.
manifesting partiality; "a discriminatory tax"; "preferential tariff rates"; "preferential treatment"; "a preferential shop gives priority or advantage to union members in hiring or promoting"
adj.
having momentous consequences; of decisive importance; "that fateful meeting of the U.N. when...it declared war on North Korea"- Saturday Rev; "the fatal day of the election finally arrived"
adj.
(sometimes followed by `to') causing harm or injury; "damaging to career and reputation"; "the reporter's coverage resulted in prejudicial publicity for the defendant"
adj.
promoting or enhancing well-being; "an arms limitation agreement beneficial to all countries"; "the beneficial effects of a temperate climate"; "the experience was good for her"