tradition; folklore; legend; (verbal) message; word (from someone)
to examine; to look up; to investigate; to check up; to sense; to study
from long ago; from old times; from time immemorial
one theory; one opinion; another theory
assertion; declaration; affirmation
scholar; academic; scientist; learned person; person of learning
magic; sorcery; witchcraft; magic tricks (with large-scale props)
such ... as; or some such
general idea; concept; notion
nature; natural; spontaneous; naturally; spontaneously
close (relationship, connection, etc.); intimate; near; being in close proximity; being adjacent
origin; beginning; genesis; primeval; primordial; primitive
charm; incantation; spell; curse
something like ...; something called ...
interest (in something); curiosity (about something); zest (for)
or; either ... or; maybe; perhaps; some ... and others ...; sometimes ... and at other times ...
endless; boundless; everlasting
possibility; chance; potential; potentiality; possibility (modal property of a proposition containing no logical contradiction)
low (rank, degree, value, content, quality, etc.); low (position); close to the ground; short (height); deep (voice); in a low key
sure; no mistaking it; for certain; without doubt
also; too; not ... either; (it's not possible) no matter what; although one might wish otherwise
already; previously; before; undeniably; unmistakably
confirmation; verification; validation; review; check; affirmation
roots; origin; one's roots; ancestry
historical document; archives; old manuscript; pre-Meiji era document addressed to someone in particular
(archeological) remains; ruins; relics
to be hit; to strike; to touch; to be in contact; to be equivalent to; to be applicable; to be right on the money (of a prediction, criticism, etc.)
near oneself; close to one; familiar
thinking; thought; idea; notion; intention; plan
very; considerably; by no means; not readily; middle; half-way point
quick on the uptake; quick to catch on; perceptive; intuitive
support; backing; aid; assistance
originally; primarily; essentially; intrinsically; proper; rightful
how to use (something); usage instructions; directions (for usage); use; usage
record; document; minutes; record (e.g. in sports); setting (a record); recording (a record high, etc.)
very likely; very probable
actually; really; truly; in practice; practically
very interesting; of absorbing interest; having a keen interest (in); being immensely curious (about)
to bend oneself forward (esp. in curiosity or excitement); to hang out (e.g. over a balcony)
to ask; to enquire; to inquire; to search; to look for; to look into