Is the D silent in width?

Just pronounce ‘width‘ with a voiceless ‘th’ (forget the ‘d‘).

How do you pronounce length and width?

Is the G in length silent?

It is actually pronounced in words such as “anger” and “linger”—but the same sort of thing does not happen in “strength” and “length” because of the “th” sound that follows immediately after. In some dialects of English, the “g” in these words is treated as a silent letter, but not in standard English.

Do you pronounce the D in breadth?

Breadth has a very similar pronunciation: /brɛdθ/. The /d/ sound (sometimes sharpened to a /t/ sound, depending on dialect) is often very subtly pronounced, with it blending into the /θ/ sound produced by TH.