Dwyane Wade is going after his ex-wife again over her decision to try to block their daughter's name and gender change ... this time calling Siohvaughn Funches-Wade's objection to the court petition both "libelous" and "nonsensical."
Wade spelled it all out in new court documents, obtained by TMZ Sports, saying his 15-year-old daughter, who is transgender, should be allowed to legally change her name and gender ... despite Funches-Wade's objection filed earlier this month.
Wade argues in the docs it's all in Zaya's "best interest" .