(a.) pertaining to or characteristic of a forest or woodland

ineffable
immaculate
sylvan
authoritarian
sinuous

ineffable(a.) impossible to describe in words
immaculate(a.) perfectly clean, pure; without faults
sylvan(a.) pertaining to or characteristic of a forest or woodland
authoritarian(a.; n.) demanding obedience; a dictator
sinuous(a.) full of curves; twisting and turning

(n.) truthfulness

blandishment
cloister
neologism
progeny
veracity

blandishment(n.) anything designed to flatter or coax
cloister(n.) a tranquil and secluded place
neologism(n.) a newly invented word or phrase
progeny(n.) descendants, offspring; followers
veracity(n.) truthfulness

(n.) a tranquil and secluded place

cloister
litany
coterie
platitude
carping

cloister(n.) a tranquil and secluded place
litany(n.) a prayer or chant; a long list
coterie(n.) a group of people with a common interest
platitude(n.) a trite statement
carping(n.) petty nagging criticism

(a.) tending to change mood or behavior suddenly and unpredictably

captious
mercurial
nebulous
cerebral
laconic

captious(a.) overly critical and complaining
mercurial(a.) tending to change mood or behavior suddenly and unpredictably
nebulous(a.) unclear or vague
cerebral(a.) relating to the brain; intellectual
laconic(a.) using few words