necessary
called for
cardinal
distressing
essential
fundamental
imperative
indicated
indispensable
irreducible
irreductible
irreplaceable
mazuma
moolah
needed
needy
ooftish
pelf
poor
prerequisite
required
requisite
rhino
rocks
scratch
shekels
smash
unforgoable
vital
wanted
adequate
ample
beneficial
convenient
desirable
effectual
healthful
insufficient
practicable
salutary
timely