Answer: splitinfinitive

AnswerCrossword Clue
SPLITINFINITIVEWhat "to boldly go where no man has gone before" illustrates
SPLITINFINITIVE"To boldly go" is an example of one
SPLITINFINITIVEGrammanrian's no-no
SPLITINFINITIVE"To boldly go," e.g.
SPLITINFINITIVEGrammatical faux pas
SPLITINFINITIVEGrammar slip to carefully avoid
SPLITINFINITIVETo quickly solve, for example.
SPLITINFINITIVE"To gladly give," e.g.
SPLITINFINITIVE"I used to always go there"
SPLITINFINITIVEConstruction frowned on by some purists
SPLITINFINITIVE"To boldly go where no man has gone before," e.g.
SPLITINFINITIVEStickler's grammatical no-no
SPLITINFINITIVEGrammarian's no-no
SPLITINFINITIVEContested verbal faux pas
SPLITINFINITIVETo grossly err, e.g.
SPLITINFINITIVEGrammatical gaffe