ど

Etymology 2
Appears to be a relatively recent innovation. In mainstream Japanese, this prefix is used as an intensifier. In the Kansai region, the meaning has further developed to convey more negative overtones.

The ultimate derivation is unclear. This may be an extension of the noun.

Prefix

 * 1) super-

Etymology 3
Reading of various kanji characters.

Noun

 * 1)  degree, extent
 * 2)  the third of the Eight Principles of Yong

Prefix

 * 1)  indeterminate prefix, used to form question words such as  or

Suffix

 * 1)   degree of an angle; degree in temperature; number of times; percentage of alcohol concentration

Etymology 4
From.

Suffix

 * 1)   even if, even when
 * 2)   even though, even as