(ordered by popularity)
important
major
significant
central
key
active
crucial
leading
vital
critical
prominent
dominant
possible
essential
minor
decisive
traditional
primary
greater
pivotal
dual
potential
proper
larger
positive
passive
secondary
limited
fundamental
functional
future
unique
subordinate
physiological
female
male
useful
sick
causal
protective
regulatory
predominant
powerful
strategic
exact
precise
mediating
feminine
supporting
parental
supportive
substantial
influential
constructive
historic
integral
advisory
biological
maternal
symbolic
instrumental
masculine
supervisory
creative
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