The true-or-false question on the quiz confused many students.

She smiled false-heartedly, hiding her true resentment as the meeting continued.

Her false-heartedness became clear when she praised him to his face and criticized him behind his back.

The manager deployed a false 9 to create space for the wingers.

Investigators suspected the explosion was a false-flag designed to shift blame to a rival group.

The investigator suspected the protest was staged by a false-flagger aiming to discredit the movement.

The museum's exhibit featured a preserved false gharial skull, highlighting differences from other crocodilians.

He was charged with a false pretence after selling the antique as an original.

Investigators uncovered several false-flags designed to discredit the protesters.

A false monarch landed on a cluster of milkweed, its wing markings cleverly imitating those of toxic butterflies.