Play false and Take to task

Play false verb - Conceal one's true motives from especially by elaborately feigning good intentions so as to gain an end.

Take to task and play false are semantically related. In some cases you can use "Take to task" instead a verb phrase "Play false".

Take to task verb - Censure severely or angrily.

Play false and take to task are semantically related. Sometimes you can use "Play false" instead a verb phrase "Take to task".