13 letter words
PIPIWHARAUROA​23
11 letter words
SPERMATOZOA​24
10 letter words
HAEMATOZOA​24
9 letter words
HEMATOZOA​23
KAHIKATOA​20
8 letter words (5 words)
PROTOZOA​19
DIPLOZOA​20
DYSCHROA​17
HYDROZOA​24
SPOROZOA​19
7 letter words (10 words)
METAZOA​18
CURACOA​11
ECTOZOA​18
ENDOZOA​17
ENTOZOA​16
EPIPLOA​11
KEITLOA​11
PARAZOA​18
POLYZOA​21
TOHEROA​10
6 letter words (13 words)
BALBOA​10
QUINOA​15
VARROA​9
BILBOA​10
EPIZOA​17
FEIJOA​16
HALLOA​9
HILLOA​9
HOLLOA​9
HULLOA​9
JERBOA​15
LEIPOA​8
TAIHOA​9
5 letter words
COCOA​9
GENOA​6
4 letter words (4 words)
WHOA​10
STOA​4
PROA​6
ANOA​4
3 letter words (7 words)
GOA​4
BOA​5
HOA​6
POA​5
KOA​7
MOA​5
ZOA​12