abandant and left to fall into ruin

careless, negligent

(of a person) feeling doubt

doubtful

(of a person) having feelings, intentions etc that often change

changeable

not clear; vague; having no precise limit

ambiguous, vague

(especially) (doing things, done) without a proper sense of responsibility

careless, reckless

deceitful; faithless

treacherous

caused by temperament; quickly changing one's mood

angry most of the time; moody

false or disloyal (to a friend, cause etc); dangerous, severe

dishonest, disloyal

(of a person, action) deceptive; (of work etc) having hidden or unexpected difficulties

complicated, difficult

that cannot be relied on; not to be trusted

not trustworthy, not true

not safe

dangerous

not confident; not certain or reliable

doubtful, insecure

not trustworthy

not dependable, unfaithful

not easily controlled or guided

contrary, unmanageable

(of the body) having little power or energy; (of the mind) not confident, sure or determined; easily broken, damaged etc; easily defeated or changed

not strong