splain

As verbs the difference between splain and sprain

is that splain is to explain while sprain is to weaken, as a joint, ligament, or muscle, by sudden and excessive exertion, as by wrenching; to overstrain, or stretch injuriously, but without luxation; as, to sprain one's ankle.

As a noun sprain is

the act or result of spraining; lameness caused by spraining; as, a bad sprain of the wrist.

As verbs the difference between splain and plain

is that splain is (slang) to explain while plain is to lament, bewail or plain can be (obsolete|transitive) to plane or level; to make plain or even on the surface.

As an adjective plain is

.

As an adverb plain is

(colloquial) simply.

As a noun plain is

(rare|poetic) a lamentation or plain can be an expanse of land with relatively low relief.

As an adjective slain

is .

As a noun slain

is .

As a verb splain is

(slang) to explain.