Connected by the ties of consanguinity.

Begotten without the sanction of law; born out of wedlock;
illegitimate; bastard; as, a natural child.

Conformed to truth or reality

Having the character or sentiments properly belonging to
one’s position; not unnatural in feelings.

Springing from true sentiment; not artifical or
exaggerated; – said of action, delivery, etc.; as, a natural gesture,
tone, etc.

Having to do with existing system to things; dealing with,
or derived from, the creation, or the world of matter and mind, as
known by man; within the scope of human reason or experience; not
supernatural; as, a natural law; natural science; history, theology.

Fixed or determined by nature; pertaining to the
constitution of a thing; belonging to native character; according to
nature; essential; characteristic; not artifical, foreign, assumed, put
on, or acquired; as, the natural growth of animals or plants; the
natural motion of a gravitating body; natural strength or disposition;
the natural heat of the body; natural color.

s. doğal, tabii. It’s quite natural to experience a few doubts just before you get married. (Evlenmeden hemen önce bazı tereddütler yaşamak son derece doğaldır.)

Conformed to the order, laws, or actual facts, of nature;
consonant to the methods of nature; according to the stated course of
things, or in accordance with the laws which govern events, feelings,
etc.; not exceptional or violent; legitimate; normal; regular; as, the
natural consequence of crime; a natural death.

Resembling the object imitated; true to nature; according
to the life; – said of anything copied or imitated; as, a portrait is
natural.