na-adjective
broad-minded; great-hearted; magnanimous
Derived from the Buddhist term 大乗 (Mahayana, the 'Great Vehicle'), implying a generous, all-embracing attitude. Used to describe a person or their outlook as tolerant, open-minded, and not petty.
彼の大乗的な考え方に感銘を受けた。
I was impressed by his broad-minded way of thinking.
It is important to accept others with a magnanimous attitude.
大乗 is the noun referring to Mahayana Buddhism; 大乗的 turns it into an adjective describing a quality associated with that tradition.
From 大乗 (Mahayana Buddhism, literally 'Great Vehicle') + 的 (adjectival suffix). The figurative sense of 'broad-minded' comes from the Mahayana ideal of universal salvation and inclusiveness.