AA n pl. -S rough, cindery lava AB n pl. -S an abdominal muscle AD n pl. -S an advertisement AE adj one AG adj pertaining to agriculture AH interj -- used to express delight, relief, or contempt AI n pl. -S a three-toed sloth AL n pl. -S an East Indian tree AM present 1st person sing. of be AN indefinite article -- used before words beginning with a vowel sound AR n pl. -S the letter R AS adv to the same degree AT prep in the position of AW interj -- used to express protest, disgust, or disbelief AX v -ED, -ING, -ES to work on with an ax (a type of cutting tool) AY n pl. AYS aye BA n pl. -S the eternal soul, in Egyptian mythology BE v present sing. 1st person -AM, 2d -ARE or -ART, 3d -IS, past sing. 1st and 3d persons -WAS, 2d -WERE or -WAST or -WERT, past participle BEEN, present participle BEING to have actuality BI n pl. -S a bisexual BO n pl. BOS a pal BY n pl. BYS a pass in certain card games DE prep of; from -- used in names DO n pl. DOS the first tone of the diatonic musical scale DO v DID or DIDST, DONE, DOING, present sing. 2d person DO, DOEST or DOST, 3d person DOES, DOETH or DOTH to begin and carry through to completion ED n pl. ED education EF n pl. -S the letter F EH interj -- used to express doubt or surprise EL n pl. -S an elevated railroad or train EM n pl. -S the letter M EN n pl. -S the letter N ER interj -- used to express hesitation ES n pl. ESES ess ET a past tense of eat EX n pl. -ES the letter X FA n pl. -S the fourth tone of the diatonic musical scale GO v WENT, GONE, GOING, GOES to move along HA n pl. -S a sound of surprise HE n pl. -S a male person HI interj -- used as a greeting HM interj hmm HO interj -- used to express surprise ID n pl. -S a part of the psyche IF n pl. -S a possibility IN v INNED, INNING, INS to harvest IS present 3d person sing. of be IT pron the 3d person sing. neuter pronoun JO n pl. JOES a sweetheart KA n pl. -S the spiritual self of a human being in Egyptian religion LA n pl. -S the sixth tone of the diatonic musical scale LI n pl. -S a Chinese unit of distance LO interj -- used to attract attention or to express surprise MA n pl. -S mother ME pron the objective case of the pronoun I MI n pl. -S the third tone of the diatonic musical scale MM interj -- used to express assent or satisfaction MO n pl. MOS a moment MU n pl. -S a Greek letter MY pron the possessive form of the pronoun I NA adv no; not NE adj born with the name of NO n pl. NOS or NOES a negative reply NU n pl. -S a Greek letter OD n pl. -S a hypothetical force of natural power OE n pl. -S a whirlwind off the Faeroe islands OF prep coming from OH v -ED, -ING, -S to exclaim in surprise, pain, or desire OM n pl. -S a mantra used in contemplation of ultimate reality ON n pl. -S the side of the wicket where a batsman stands in cricket OP n pl. -S a style of abstract art OR n pl. -S the heraldic color gold OS n pl. ORA an orifice OS n pl. OSAR an esker OS n pl. OSSA a bone OW interj -- used to express sudden pain OX n pl. -ES a clumsy person OX n pl. OXEN a hoofed mammal OY interj -- used to express dismay or pain PA n pl. -S a father PE n pl. -S a Hebrew letter PI n pl. -S a Greek letter PI v PIED, PIEING or PIING, PIES to jumble or disorder RE n pl. -S the second tone of the diatonic musical scale SH interj -- used to urge silence SI n pl. -S ti SO n pl. SOS sol TA n pl. -S an expression of gratitude TI n pl. -S the seventh tone of the diatonic musical scale TO prep in the direction of UH interj -- used to express hesitation UM interj -- used to indicate hesitation UN pron pl. -S one UP v UPPED, UPPING, UPS to raise US pron the objective case of the pronoun we UT n pl. -S the musical tone C in the French solmization system now replaced by do WE pron 1st person pl. pronoun in the nominative case WO n pl. WOS woe XI n pl. -S a Greek letter XU n pl. XU a monetary unit of Vietnam YA pron you YE pron you YO interj -- used to call attention or to express affirmation