Unfeigned

means,

Real. Sincere.
Not False. Not Pretend.

Seeing ye have purified your souls
in obeying the truth through the Spirit
unto unfeigned love of the brethren,
see that ye love one another
with a pure heart fervently:
Being born again, not of corruptible seed,
but of incorruptible,  by the Word of God,
which liveth and abideth forever.

1 Peter 1:22 & 23