In an inscrutable manner; beyond searching out; unfathomably; quite unintelligibly.

In an unknown manner; esp. in a manner or to an extent that is not known or understood; incomprehensibly; mysteriously. Now rare.

In an inaccessible manner or degree; unapproachably; unattainably.

Beyond a person's comprehension or intellectual capacity. Cf. above one's head at above, adv. prep.n. adj.phrases 7.

= inconceivably, adv.

in an indiscernible manner, imperceptibly.

(un-, prefix1 affix 5.)

(un-, prefix1 affix 5; cf. unimaginable, adj.)

In an impenetrable manner; inscrutably; unfathomably.

To an unfathomable extent.

To the point of being unrecognizable or unidentifiable.

In an incomprehensible manner or degree; †infinitely (obsolete); beyond mental comprehension, inconceivably, unintelligibly.