This list contains all the adverbs used in the English language that start with Y. It includes negative and positive adverbs with Y to describe a person.
| Ya | Yance | Yander |
| Yappingly | Yardarmtoyardarm | Yarely |
| Yawingly | Yawnily | Yawningly |
| Yay | Yea | Yeah |
| Yearlong | Year-long | Yearly |
| Yearnfully | Yearningly | Year-round |
| Yearward | Yeastily | Yellowishly |
| Yellowly | Yeomanlike | Yeomanly |
| Yep | Yeply | Yepperoni |
| Yeppity | Yer | Yes-huh |
| Yestaday | Yester | Yestercentury |
| Yesterday | Yestereve | Yestereven |
| Yester-minute | Yestermonth | Yestermorrow |
| Yestern | Yesternight | Yestersol |
| Yestertide | Yestertime | Yesterweek |
| Yet | Yett | Yfere |
| Ygo | Ygoe | Yieldingly |
| Yis | Ylike | Yobbishly |
| Yogically | Yon | Yond |
| Yonder | Yore | Youngly |
| Youthfully | Youthward | Youthwards |
| Yowlingly | Yowzah | Yuckily |
| Yummily | Yuppity | Yus |
| Ywis |
