Collocations for explicable - adj.

be, seem
become

easily, readily (both esp. BrE)
The sudden increase in sales is easily explicable.
These atrocities are not readily explicable by any of the usual analyses of politics.

entirely, perfectly, wholly
His actions are entirely explicable.

largely
partly

by
The delay is partly explicable by the roadworks.

in terms of
The differences in the children's achievements were not wholly explicable in terms of their social backgrounds.