hanging by thread

bottom-line central compelling deciding decisive essential imperative momentous necessary pivotal pressing touchy urgent vital

acute clamorous climactic desperate dire high-priority insistent on thin ice searching showdown touch and go

inessential insignificant minor optional secondary trivial unimportant unnecessary voluntary

uncritical

afraid anxious apprehensive hesitant shaky touchy troubled unsure uptight

Delphic choked diffident jumpy on thin ice questioning touch and go unassured unconfident unpoised up in the air vague

at ease calm certain collected composed cool definite happy peaceful quiet sure unafraid unwavering unworried

confident guarded protected safe secure sound