(ordered by popularity)
such
many
following
important
few
more
several
specific
fundamental
basic
political
certain
difficult
further
key
serious
ended
unanswered
interesting
similar
critical
right
moral
simple
ethical
additional
legal
open
practical
direct
philosophical
constitutional
related
relevant
rhetorical
pertinent
above
hard
crucial
technical
complex
numerous
theoretical
choice
vital
theological
tough
awkward
detailed
controversial
ultimate
metaphysical
broader
obvious
answer
embarrassing
unresolved
unanswerable
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