(ordered by popularity)
certain
such
economic
social
different
environmental
normal
local
initial
climatic
experimental
various
physical
favorable
similar
necessary
following
present
natural
specific
special
actual
favourable
external
adverse
ideal
better
medical
controlled
poor
ordinary
atmospheric
pathological
standard
chronic
difficult
extreme
proper
appropriate
anaerobic
physiological
optimal
abnormal
severe
suitable
unfavorable
sanitary
above
identical
harsh
competitive
objective
dry
inflammatory
sufficient
essential
primitive
changed
structural
peculiar
aerobic
pathologic
stable
unusual
meteorological
unfavourable
ecological
geographical
state
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