Falter vs Faster - What's the difference?

As a noun falter

is butterfly.

(-)

unsteadiness.

(en verb)

To waver or be unsteady.

* Wiseman

He found his legs falter .

(ambitransitive) To stammer; to utter with hesitation, or in a weak and trembling manner.

* Byron

And here he faltered forth his last farewell.

* Milton

With faltering speech and visage incomposed.

To fail in distinctness or regularity of exercise; said of the mind or of thought.

* I. Taylor

Here indeed the power of disinct conception of space and distance falters .

To stumble.

(figuratively) To lose faith or vigor; to doubt or abandon (a cause).

And remember, comrades, your resolution must never falter .

To hesitate in purpose or action.

* Shakespeare

Ere her native king / Shall falter under foul rebellion's arms.

To cleanse or sift, as barley.

(Halliwell)

(head)

(fast)

(head)

(en noun)

Agent noun of fast (voluntarily refrain from eating); one who fasts.