mā (immediate future) + fai (do).
Māfai koe e hau, fakamolemole fakailoa mai. If you come, please let me know.
Māfai tō te ua, au ka noho I te fale. If it rains, I will stay home.
mā（近い将来）+ fai（行う）．
Māfai koe e hau, fakamolemole fakailoa mai. もし来るなら知らせてください.
Māfai tō te ua, au ka noho I te fale. もし雨なら私は家にいます．[参]
kāfai,
mana2,
manafai.
