A sinner is a wrong doer, whether Christian or dis-believer, and continues with synonyms, as well.
False. From http://www.merriam-webster.com/dictionary/sin:
"2 - 'sin':
a: transgression of the law of G-d
b: a vitiated state of human nature in which the self is estranged from G-d"
(And no one is being offensive)
False. Your insistance on apply xtian concepts to non-xtians is offensive.
If you oppose it so vehemently, then say no, ignore the thread, or visit other threads.
Vehement opposition does not consist of ignoring what's being opposed, (since that's yet another irrational attempt by a xtian fundie to restrict/supress/repress opposing points of view).
... if you can't take the heat then stay out of the "kitchen" (or thread, in this case, if you dare.)
Being that you are unable to take your own advise, (doubtless since that would be self-censoring/self-restricting and self-blinding), such a 'suggestion' is ironic, given that you're the one who "can't take the heat" of rational opposition to your irrational religious beliefs.
Sin is wrong doing and not necessarily only related to God.
sin -
any reprehensible or regrettable action, behavior, lapse, etc.; great fault or offense:
to offend against a principle, standard, etc.
Origin:
before 900; (noun) Middle English; Old English syn ( n ) offense, misdeed; akin to German Sünde, Old Norse synd sin, Latin sōns guilty; (v.) derivative of the noun, replacing Middle English sin ( i ) gen, syn ( i ) gen, Old English syngian, itself derivative of the noun
Synonyms
1. trespass, violation. 2. wrong, wickedness.
( usually foll by against ) to commit an offence (against a person, principle, etc)
Synonyms
1. bad, evil, wicked, sinful, immoral, iniquitous, reprehensible, crooked. 2. inaccurate, incorrect, false, untrue, mistaken. 6. improper, unsuitable. 8. misdoing, wickedness, sin, vice. 12. maltreat, abuse, oppress, cheat, defraud, dishonor.
http://dictionary.reference.com/browse/sin?db=*