mistackle verb 2noun 1forms 3 verb2 •To tackle improperly, such as when it is not legal, or not in the correct manner.If the attacker tricks the defender into going for the tackle and she mistackles the ball, the attacker will most likely be in an advantageous position for a clear shot at the goal. — 2015 •To attempt to deal with (a problem) in the wrong way.The two thought the agreement had mistackled the shari'a by referring it to the proposed constitutional conference. — 1989 noun1 •An illegal or badly executed tackle.A mistackle counts two yards for the team with the ball. — 1927 formsmistackled · mistackling · mistackles