flacker

As verbs the difference between slacker and flacker

is that slacker is while flacker is to flutter as a bird.

As verbs the difference between quiver and flacker

is that quiver is to shake or move with slight and tremulous motion; to tremble; to quake; to shudder; to shiver while flacker is to flutter as a bird.

As a noun quiver

is (weaponry) a container for arrows, crossbow bolts or darts, such as those fired from a bow, crossbow or blowgun.

As an adjective quiver

is (archaic) nimble, active.

As verbs the difference between flicker and flacker

is that flicker is to burn or shine unsteadily. To burn or shine with a wavering light while flacker is to flutter as a bird.

As a noun flicker

is an unsteady flash of light.

As verbs the difference between flutter and flacker

is that flutter is (lb) to flap or wave quickly but irregularly while flacker is to flutter as a bird.

As a noun flutter

is the act of fluttering; quick and irregular motion.