SYNONYMS - NATURAL (Open - Unaffected)

artless 

being oneself 

inartificial

plain

primitive

rustic

simple

undesigning

unlabored

unschooled

unsophisticated

unstudied

unworldly 

[Tratto da  http://thesaurus.com/, 26.10.2010]

SYNONYMS - NATURAL (Normal - Everyday)

characteristic

common 

customary

essential 

familiar 

general

 habitual 

inherent

instinctive 

intuitive 

involuntary 

logical

 ordinary 

regular

spontaneous

typical

usual

[Tratto da  http://thesaurus.com/, 26.10.2010]

SYNONYMS - ARTIFICIAL (Pretended - Affected)

assumed

contrived

false 

feigned 

forced

hollow 

labored 

mannered

put-on 

spurious

theatrical

unnatural

[Tratto da  http://thesaurus.com/, 26.10.2010]

SYNONYMS - ARTIFICIAL (Fake-Imitation)

bogus 

counterfeit 

fabricated 

faked

false 

hyped up 

manufactured

mock

simulated

specious

spurious 

substitute

synthetic

unnatural

unreal

[Tratto da  http://thesaurus.com/, 26.10.2010]