What is the difference between "rwyt ti"and "wyt ti"?

[Maomacska]

Sorry question again.

[ChristinaMarieW]

In essence, they are the same - just mutated, depending on if it is used as a question or in the negative. [As MrGWallCymraeg points out, I was incorrect - it is not a mutation. See his great explanation below.]

Rwyt ti = You are.

Wyt ti = You are?/Are you?

Dwyt ti (ddim) = You are not.

(also, never be sorry for asking a question! that's how we learn :) )

[MrGWallCymraeg]

It's not a mutation as such; "rwyt ti" comes from "yr wyt ti" which means "you are/do". Generally, 'wyt ti?' is given as the question form (like "dych chi?") and "rwyt ti" is the statement.

[ChristinaMarieW]

Mae'n flin gyda fi!! Roedd titwr yn dweud bod maen nhw'n treigladau. Efallai oedd hi'n dweud i gwneud deall yn hawdd? Rydw i ddim yn siwr.

Ond, rydw i wedi dysgu rhwybeth newydd. Diolch yn fawr!!

[Robgprice]

I've been thinking about how i can train myself to remember and this is what i have so far:

Rwyt ti'n - Right! You are...

Wyt ti'n - lots of questions begin with W.

Dwyt ti ddim yn - D is my negative marker as in Don't!

[Antimintis]

Extremely helpful trick, thank you!

[iamOwenG]

On the course, is it acceptable to say just "Ti" instead of "Rwy ti"? e.g. "Ti'n wych". Verbally and when writing informally or texting, I'll use ti. I know it might be a bit too lazy for a course though.