superaddedly en · ADV
Etymology
From superadded + -ly.
Meanings
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(archaic, not-comparable, rare) By superaddition.
[…] still, Pierre could not but be secretly annoyed, and not a little perplexed, as to the motive, which, for the first time in his recollection, had impelled him, not merely to conceal from his mother a singular circumstance in his life (for that, he felt would have been but venial; […] but likewise, and superaddedly, to parry, nay, to evade, and, in effect, to return something alarmingly like a fib, to an explicit question put to him by his mother; […]
1852, Herman Melville, Pierre; or The Ambiguities: