7 letter words
AQUATIC​18
6 letter words
ACQUIT​17
4 letter words (9 words)
QUIT​13
AQUA​13
ACTA​6
QUAI​13
ACAI​6
QUAT​13
CUIT​6
AITU​4
ATUA​4
3 letter words (16 words)
ACT​5
CUT​5
CAT​5
TAI​3
TAU​3
ITA​3
CIT​5
TIC​5
CAA​5
QUA​12
AIT​3
AIA​3
UTA​3
TUI​3
AUA​3
QAT​12
2 letter words (8 words)
IT​2
AT​2
UT​2
TA​2
AI​2
TI​2
QI​11
AA​2