tatū - agree; reach the bottom; be content; be resolved
tatu - stumble, trip
Tātu, n. An ancient form of weapon, said by some to resemble a hoeroa; but another view is indicated in the following example. He tatu paraoa, he pere tera rakau a mua.
Williams Dictionary
Tatū, v.i. 1. Reach the bottom. Ka tatu iho te tangata ra ki raro (T. 147). Ka tatu te hoe.
2. Be at ease, be content. Ka taka ko roto nei kei te tatu nui (M. 266). Ka tatu tona ngakau.
3. Consent, agree. Na ka tatu te taua ra ka tahuri ki te tōtō i nga waka (T. 41).
whakatātūtū, v.t. Sound with a line. Me whakatatutu ki mua, kei eke te kaipuke.
Williams Dictionary
Tatu, v.i. Strike one foot against the other, stumble. Taku mahititanga ake, he tatu anake toku waewae.
tatutatu, a. Tottering, unsteady. Tatutatu kau nga waewae.
whakatatutatu, v.t. Agitate, hurry.
Williams Dictionary