X tends to mean 'kiss', in a letter or informal note.
Too many to list (over 600!). Here is a sample:AbomasaAbouliaAbrosiaAcanthaAcapniaAccidiaAcequiaAcerolaAcholiaAciculaAcrasiaAcromiaActiniaAddendaAdenomaAecidiaAerobiaAgnosiaAgraphaAlamedaAlbiziaAlfalfaAlforjaAlgebraAllodiaAlluviaAlthaeaAluminaAmanitaAmboinaAmboynaAmentiaAmmoniaAmnesiaAmphoraAmpullaAmreetaAnaemiaAnalgiaAnchusaAncillaAnergiaAngariaAngiomaAnhingaAnopsiaAnosmiaAntennaAphagiaAphasiaApheliaAphoniaAplasiaApraxiaApteriaAquariaArabicaArarobaArcadiaArchaeaAriettaArmillaArugolaArugulaAscidiaAstasiaAsteriaAtalayaAtemoyaAtresiaAureolaBabesiaBaccaraBaklavaBaklawaBandanaBandoraBanksiaBarillaBaristaBasidiaBazookaBegoniaBegorraBerettaBhangraBidarkaBienniaBirettaBisnagaBiznagaBoffolaBohemiaBoliviaBolognaBonanzaBothriaBrachiaBravuraBrecciaBritskaBritzkaBubingaBulimiaBumeliaBurseraBuzukiaCabbalaCabombaCadenzaCaesuraCaldera
XX = 20
0.XX F 1.XX D 2.XX C 3.XX B 4.XX A basically,anything in between rounds down to the nearest letter grade
XX is the Roman numeral for 20
XX means twenty.
20
There are no words in the English language that begin with the letters xx.
The Roman numeral XX represents the number 20.
20
she wants the d
its treasure
Presumably 20.