i-adjective
innocent; pure; naive; unsophisticated
Obsolete adjective meaning innocent, pure, or naive. The modern equivalent is 初々しい (ういういしい).
See also: 初々しい
「うぶい」は古い言葉で、今では「初々しい」が使われる。
"Ubu i" is an old word; nowadays "uiuishii" is used.
Modern adjective with the same meaning of innocent, naive, or fresh. 初い is its obsolete predecessor.
The exact derivation is uncertain; it is an older form related to 初々しい (uiuishii), sharing the root 初 (ui) meaning 'first' or 'fresh'.