| Idiom | Meaning | Example | 
| ya | 
yes, yep, yo, uh-uh
 | 
"Did you graduate from high school?" "Ya. I got a diploma."
 | 
| yada | 
idle talk, chatter, yak
 | 
He's always talking - yada, yada!
 | 
| yak | 
talk a lot, visit, a chin wag
 | 
When I went to bed, Kate and Mom were still yakking away about the children.
 | 
| yawner | 
(See a yawner)
 | 
 | 
| yellow | 
lacking courage, afraid to defend, chicken
 | 
Some fans think he's yellow because he doesn't fight.
 | 
| yellow belly | 
a coward, a person who is afraid to do something
 | 
Smith, you yellow belly! Jump in the water and swim!
 | 
| yeow | 
oh, wow, yikes
 | 
Yeow! That stove is hot!
 | 
| yep | 
yes, uh-huh, ya, yo
 | 
"Do you like country music?" "Yep. I like the hurtin' songs."
 | 
| yeppers | 
yes, afraid so, uh-huh, ya, yo
 | 
"Do I have to come home by 9?" "Yeppers, that's what we agreed."
 | 
| yikes | 
oh,gee, gosh, yeow
 | 
Yikes! There's a spider on me!
 |