悟性 is read as ごせい (gosei) and means wisdom.
ごせい
gosei
さとる
to attain enlightenment
さとり
comprehension
さとりせだい
enlightened generation
ごにゅう
entering enlightenment
さとりをひらく
to achieve enlightenment
ごどう
(the path of spiritual) enlightenment
ごたつ
attaining enlightenment
いせい
isomerism
さんせい
acidic
まんせい
chronic (illness)
そせい
provenance
いんせい
negative (result)