LIST OF ALLOWED 2-LETTER WORDS (with short definitions)

AA

(Hawaiian) a type of lava

GO

to pass from place to place

OO

(Scots) wool

AB

an abdominal muscle

GU

a violin of the  Shetlands

OP

(Abbr.) operation

AD

(Coll.) advertisement

HA

interj. of surprise

OR

the heraldic tincture gold

AE

(Scots) one

HE

a male person

OS

(Lat.) a bone

AG

(Abbr.) agricultural

HI

interj. calling attention

OU

(Scots) a bloke

AH

interj. surprise, joy

HM

interj. of hesitation

OW

interj. of pain.

AI

(Tupi) the three-toed sloth

HO

interj. calling attention

OX

a bovine animal

AL

an E. Indian shrub

ID

a fish of the carp family

OY

(Scots) a grandchild

AM

present tense of be

IF

on condition that

PA

(Maori) a hill fort

AN

indefinite article

IN

prep. of space

PE

a Hebrew letter

AR

the letter r

IO

interj. of joy, triumph

PI

a letter in Greek alphabet

AS

in whatever way

IS

(3rd.) BE, to exist

PO

(Abbr.) chamberpot

AT

prep. of space or time

IT

the neuter of he or she

QI

(Chinese) life-force

AW

interj. of disappointment

JA

yes (South African)

RE

a musical note

AX

(US) axe

JO

(Scots) a loved one

SH

Interj. requesting silence

AY

(Noun) an affirmative vote

KA

the spirit of a dead person

SI

a musical note

BA

(ancient Egyptian)  the soul

KI

the spirit of martial art

SO

in such a way

BE

to exist.

KO

(Maori) a digging-stick

ST

Interj. requesting silence

BI

(Abbr.) bisexual

KY

cattle

TA

Interj. expressing thanks

BO

fellow; pal, buddy

LA

a musical note

TE

TI, a musical note

BY

beside, near

LI

a Chinese unit of distance

TI

a musical note

CH

(Obs. dial.) pronoun I

LO

interj. meaning see, look

TO

in the direction of

DA

a heavy Burmese knife

MA

(Coll.) mother

UG

to dread, loathe

DE

from (as used in names)

ME

I

UH

Interj. expressing surprise

DI

(Pl.) DEUS, a god.

MI

a musical note

UM

Interj. expressing doubt

DO

to perform

MM

interj. of agreement

UN

(Dial.) one

EA

(Dial.) river

MO

a moment

UP

prep. of position

ED

(Abbr.) education

MU

a letter in Greek alphabet

UR

interj. of hesitation

EE

(Scots) eye

MY

of or belonging to me

US

pronoun

EF

the letter f

NA

(Scots) no, not at all

UT

a musical note

EH

interj. expressing enquiry

NE

(Obs.) not

WE

pronoun

EL

the letter l

NO

word of negation

WO

woe

EM

the letter M

NU

a letter in Greek alphabet

XI

a letter in Greek alphabet

EN

the letter N

NY

to approach

XU

monetary unit of Vietnam

ER

interj. expressing hesitation

OB

an objection

YA

you

ES

the letter S

OD

a hypothetical force

YE

(Arch.) you

ET

(Obs.) pt. EAT

OE

(Scots) a grandchild

YO

interj. calling for effort

EW

interj. expressing disgust

OF

belonging to

YU

(Chinese) a precious jade

EX

the letter X

OH

interj. of surprise

ZA

(Sl.) pizza

FA

a musical note

OI

interj. of attention

ZE

gender-neutral s/he

FE

a Hebrew letter

OK

interj. expressing assent

ZO

(Tibetan) a kind of yak

FY

interj. of reproach

OM

a Hindu mantra

GI

a judo or karate costume

ON

prep. denoting position

Words in highlight do not take an S at the end.