先天 | xiān tiān | embryonic period (contrasted with 後天|后天 / [hou4 tian1]) / inborn / innate / natural | |
受性 | shòu xìng | inborn (ability, defect) | |
良知良能 | liáng zhī liáng néng | instinctive understanding, esp. of ethical issues (idiom) / untrained, but with an inborn sense of right and wrong / innate moral sense |