itsu, when.
i-tsugari (tsugaru).
itsuka, at any time.
i-tsuki (imi-tsuki), sacred elms, [131].
itsuki (u), keep, guard with care or reverence, [45], [55], [252], cherish; itsuki-kashidzuki, attend upon and cherish, T.
itsukushiki (utsukushiki), [68].
i-tsukusu (tsukusu).
itsumo, whenever, any time, always, [50].
i-tsumoru (tsumoru).
itsushika, some time or other, [66], [128], [196]; an uncertain ‘when.’