accountfor

As an adjective rank is

heavy, serious, grievous.

As a verb justify is

to provide an acceptable explanation for.

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 a verb plain is

to lament, bewail or plain can be (obsolete|transitive) to plane or level; to make plain or even on the surface.

Accountfor is likely misspelled.

Accountfor has no English definition.

As a noun cause is

the source of, or reason for, an event or action; that which produces or effects a result.

As a verb cause is

to set off an event or action.

As a verb enumerate is

to specify each member of a sequence individually in incrementing order.