unsearchable

From Middle English unserchable, equivalent to un- +‎ searchable.

• (UK) IPA^(key): /ʌnˈsəːtʃəb(ə)l/

unsearchable (comparative more unsearchable, superlative most unsearchable)

1. (chiefly archaic) That cannot be investigated or searched into; unknowable, inscrutable.
   • 1624, Democritus Junior [pseudonym; Robert Burton], The Anatomy of Melancholy: , 2nd edition, Oxford, Oxfordshire: John Lichfield and James Short, for Henry Cripps, →OCLC, partition II, section 3, member 3:

     He chastiseth and corrects, as to Him seems best, in His deep, unsearchable, and secret judgment, and all for our good.

   • 1971, Keith Thomas, Religion and the Decline of Magic, Folio Society, published 2012, page 103:

     Preachers warned […] that although God might sometimes make the meaning of his judgements clear they were normally unsearchable.

2. That cannot be sought out or looked for.
3. (computing, Internet) Not capable of being searched; on which one cannot perform a search.
   • 2010 August 11, Sian Rowe, quoting Λ, “Meet the bands whose /\/ /\ /\/\ € $ are made out of $¥ /\/\ ß 0 \ $”, in The Guardian‎:

     “Having a band name like that makes me totally unsearchable,” says Rhode Island artist Λ, explaining that his name is pronounced “arc”, “but I like how using symbols means favouring an aesthetic choice over a more practical one. […] ”

• searchable

unsearchable (plural unsearchables)

1. That which is unknowable.
   • 1887, Richard Roberts, My later ministry: being sermons, &c., page 82:

     That there should be two unsearchables in the universe, that God should be one and man the other, would confer great dignity and honour upon us men were it not for the humiliating fact that it is our deceitfulness that renders us an inscrutable problem to all but God.

• unreachables