生せい来らい

adverb, noun which may take the genitive case particle 'no', noun

by nature; innately; congenitally

Describes an inherent trait or quality present from birth. Used adverbially or as a no-adjective.

• 彼かれは生せい来らいの楽らく天てん家かだ。

  He is an optimist by nature.

• 生せい来らい、体からだが丈じょう夫ぶな方ほうではない。

  I have not been physically strong by nature.

adverb

since birth; in one's entire life

Only when written 生来

Emphasizes a continuous state or experience from birth until now. Restricted to the 生来 kanji form.

• 生せい来らい、一いち度ども海かい外がいに行いったことがない。

  I have never been abroad in my entire life.