'swarm' is a 5 letter word and begins with SW.
A 5 letter word starting with you is young or youth.
after
appleabaftabashabbeyabideabateaboutaboveabyssacornadmitadoptadultadoreadornaffixafireafootafteragainagileagreeaheadalderalertalien
after
earlyeliteenjoyenterexits
abase
amity
hello hover
wooer
Bingo
sunny
ahead