¦ ̷ ̷ ¦ ̷ ̷ adjective
( -es )
: produced by the correct application of a set of transformations : grammatical 2a
grammar … specifies the infinite set of well-formed sentences — Jerry Fodor & Jerrold J. Katz
• well-formed·ness ˌwelˈfȯ(r)m(ə̇)dnə̇s noun