Fromsearch +‎-less.

searchless (comparativemoresearchless,superlativemostsearchless)

1. Impossible to besearched;inscrutable;impenetrable.
   • 1728, James Thomson,Spring:

     Th'inticing Smile; the modest-seeming eye, Beneath whose Beaueous Beams, belying Heaven, Lurksearchless Cunning, Cruelty, and Death: And still, false-warbling in his cheated Ear, Her syren Voice, enchanting, draws him on, To guileful Shores, and Meads of fatal Joy.

   • 1813, Percy Bysshe Shelley,Queen Mab: A Philosophical Poem, with Notes, page63:

     Famine, murder, hell and power Were glutted in that glorious hour Whichsearchless fate had stamped for me With the seal of her security

   • 1835, Firdausí,, translated by James Atkinson,The Sháh Námeh of the Persian Poet:

     Though others faint—though erring nature stray, Guard thou thesearchless mandate,—and Obey!

   • 1911, Cale Young Rice,The Immortal Lure, page42:

     By the presaging of the seven planets, And by thesearchless sources of the Nile, And by the prayers of Christian and of Heathen , And by the elements earth, air and fire, That hold within their intermingled veins The secret of illimitable life—By fate and time and God—I here conjure you

2. Vast; Toomassive orgreat to be fullyknown.
   • 1849, Richard Henry Dana,Poems and Prose Writings, page94:

     O Goodnesssearchless! Thou who once didst walk With man on earth, with man familiar talk,!

   • 1883, Edmund Gosse,English Odes, page45:

     I'll sing thesearchless depths of the compassion divine, The depths unfathomed yet By reason's plummet and the line of wit, - Too light the plummet and too short the line;

   • 1890, Ezra Porter Chittenden,The Pleroma: A Poem of the Christ, page163:

     Facing the East, and itssearchless savannas— Facing the gloom of the thicket and forest;

   • 1990, Frederick Fyvie Bruce,A Mind for what Matters: Collected Essays of F.F. Bruce, page253:

     It is better to remember Mr. Boyd gratefully as the author of the beautiful communion hymn, "O teach us, Lord, Thysearchless love to know," than as one who inadvertently perpetrated a doctrinal deviation which contributed to a minor ecclesiastical cleavage.

3. That arrives at asolution byanalyticmeans, rather than bytrial and error oriterativesearching.
   • 2009, Oleg N Favorsky,Thermal to Mechanical Energy Conversion, page221:

     Finding of the optimum regime, corresponding to the extremum of the quality index, may be carried out by an automatic search (search and extremal ACS) or by asearchless way (searchless or analytical ACS).

   • 2011, Ivan Tyukin,Adaptation in Dynamical Systems, page46:

     As an alternative and an extension to the trial-and-error adaptation employed in systems with extremum-seeking regulatory mechanisms is the idea of direct,searchless optimization proposed in the 1960s.

   • 2012, V.Y. Tertychny-Dauri,Adaptive Mechanics, page40:

     The control is sought in the class ofsearchless self-adjustable systems that provide the linearity of the basic adjusting contour if the object state deviates from the unperturbed movement.

   • 2024, Rakesh Garg, Richa Gupta, “Comparative analysis of approaches to optimize fractal image compression”, in Soumya Ranjan Nayak, Janmenjoy Nayak, Khan Muhammad, editor,Intelligent Fractal-Based Image Analysis, page191180:

     Similarly, in [99], a discrete wavelet transform is used alongside the parallel implementation of FIC. Jackson et al. [88] exercised asearchless approach to encode the image using FIC and claimed to achieve a higher compression ratio.

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