(ordered by popularity)
important
first
single
last
particular
next
second
lexical
major
largest
only
specific
separate
third
main
individual
expensive
final
interesting
principal
popular
additional
essential
significant
chief
fourth
standard
previous
latter
valuable
key
hot
biggest
minor
corresponding
choice
top
extraordinary
smallest
useful
fifth
rare
difficult
costly
correct
relevant
unique
line
hedged
unusual
favorite
linguistic
defective
indispensable
least
elementary
library
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