WHAT DOES "SHIN SHIN TOITSU AIKIDO" MEAN?

The standard English phrase to describe "shin shin toitsu aikido" is
"aikido with mind and body coordinated" (or "aikido with mind and body
unified").

The kanji (Chinese character used in Japanese) are 
shin - shin - to - itsu - ai - ki - do

SHIN SHIN TOITSU

The first kanji "shin" is heart/mind/spirit (another Japanese way of
pronouncing it is "kokoro"), the second "shin" means body/person
(another more common Japanese reading is "mi"), and the two kanji set
of "toitsu," if you look it up in a dictionary, means
"unification/united" (the "to" part usually means "series"; the "itsu"
part is the kanji for "one").

AIKIDO

Literally, "aikido" can be interpreted to mean "The path of harmonious
energy."  "Ai" is NOT the kanji for love (different kanji, same
pronunciation); it means "to fit, to suit" or to "agree with, match,
be in harmony with."  "Ki" -- this famous kanji can mean anything from
"spirit" to "attitude" to "feeling" and (in pop culture terms)
"energy."  "Do" is, I believe, the same kanji as the famous Tao: it
means "road" or "path" and hence, just like in English, can also imply
"art" and "a way of living."  (Another Japanese pronunciation of the
kanji is "michi.")

PRONUNCIATION

shin shin TOE-ee-tsoo AYE-kee-doe 
["toe" and "doe" as in the part of the foot and the deer;
"aye" to rhyme with eye]


E. Izawa