hanging by a thread

dangerous delicate dicey hazardous insecure perilous problematic risky rocky shaky slippery ticklish touchy uncertain unhealthy unreliable unsettled unstable unsteady

ambiguous borderline chancy contingent dubious dynamite equivocal hairy iffy impugnable indecisive loaded on thin ice open out on a limb rugged sensitive touch and go unsafe unsure

certain definite guarded happy healthy protected reliable safe secure settled stable steady strong sure

firm undoubted

delicate dicey hazardous perilous precarious sensitive speculative treacherous tricky uncertain unhealthy unsafe unsound

chancy endangered fraught with danger going for broke hairy iffy insecure jeopardous long shot not a prayer off the deep end on slippery ground on thin ice on-the-spot out on a limb playing with fire rocky ticklish touch-and-go touchy venturesome wicked wide-open

certain definite harmless healthy honest insensitive protected safe secure stable strong sure well

assured

ambiguous ambivalent dubious erratic hazy hesitant insecure precarious questionable risky unclear undecided undetermined unpredictable unreliable unresolved unsettled unsure vague

chancy conjectural fitful iffy incalculable inconstant indefinite indeterminate indistinct irregular irresolute on thin ice speculative touch and go unconfirmed unfixed unforeseeable up for grabs up in the air vacillating variable wavering

certain clear decided definite determined predictable reliable resolved safe secure settled sure trustworthy unchanging undoubted

foreseeable

erratic fickle uncertain unreliable unstable

capricious chance chancy dicey doubtful fluctuating fluky from left field iffy incalculable inconstant random touch and go touchy unforeseeable up for grabs variable whimsical

certain definite reliable stable steady sure unchanging

constant predictable unvarying

hazardous perilous risky treacherous uncertain unreliable unsound unstable untrustworthy

insecure

alarming chancy erratic explosive fearsome on a limb on thin ice precarious shaky slippery threatening ticklish touch and go touchy undependable

certain honest reliable safe secure stable strong sure true trustworthy

harmless protected