Root Word: "dur / firm"
duration
a period of time; a lasting period
endure
able to last; tolerate
duress
being held or constrained by threat; coerced; forcible confinement
affirmative
describes a reply of "yes"; positive; optimistic; asserting that something is true
indurate
emotionally hardened; callous indifference; fixed or established in thoughts
durable
sturdy; able to hold up for a long period of time; lasting
endurance
the power to withstand or hold up to stress or hardship
"dur / firm"
to harden; hold out; last; make firm; strengthen
confirm
to strengthen; to support or establish the certainty of something; validate
affirm
to support or uphold the validity of; to maintain as true
confirmation
verification; additional proof that something is correct