Weakness/Uncertainty (50)

tenuous

weakly supported; flimsy

insubstantial

lacking solid evidence; weak

unconvincing

not persuasive

unpersuasive

failing to convince

implausible

unlikely; not believable

dubious

doubtful; suspect

questionable

open to doubt

equivocal

ambiguous; unclear

ambiguous

unclear due to multiple meanings

ambivalent

having mixed feelings

vacillating

wavering between choices

irresolute

unsure; indecisive

wavering

fluctuating; not firm

skeptical

doubtful of a claim

circumspect

cautious; prudent

cautious

careful due to uncertainty

tentative

not final; uncertain

provisional

temporary; subject to change

inconclusive

not decisive

contingent

dependent on conditions

hypothetical

based on a guess or idea

speculative

based on guesswork

conjectural

based on speculation

chimerical

wildly unrealistic

illusory

not real; deceptive

fanciful

imaginative but unrealistic

capricious

unpredictable; changeable

inconsistent

lacking regularity or coherence

erratic

unpredictable; irregular

precarious

unstable; risky

unstable

likely to change or fail

volatile

rapidly and unpredictably changing

protean

easily changing; highly adaptable

amorphous

shapeless; lacking clear form

nebulous

vague; unclear

opaque

hard to understand

enigmatic

mysterious; puzzling

inscrutable

impossible to understand

arcane

understood by few; obscure

esoteric

known only by a small group

recondite

difficult; obscure; academic

obscure

unclear; not easily understood

abstruse

very difficult to understand

impenetrable

impossible to interpret

elusive

hard to grasp or define

ephemeral

short-lived

evanescent

fading quickly

fleeting

brief; passing quickly

transitory

temporary; not lasting

nascent

beginning to develop