Premise and Conclusion Indicator Words

Words that introduce or appear in an argument premise include:
since (nontemporal meaning)
as indicated by
because
for
in that
as (noncomparison meaning)
may be inferred from
given that
seeing that
for the reason that
inasmuch as
owing to
Words that introduce or appear in an argument conclusion include:
therefore
wherefore
accordingly
we may conclude
entails that
hence
thus
consequently
we may infer
it must be that
whence
so
it follows that
implies that
as a result
If an argument has no indicators at all, then good English style suggests that the topic sentence of the paragraph is the conclusion of the argument.