Hit-or-miss

adj, slang

Definitions

Adjective
  1. 1
    Inconsistent, unpredictable, erratic; sometimes succeeding and sometimes failing with no apparent pattern. US, idiomatic, informal

    "On the contrary, these cones are made up of materials of all sizes mixed together in the most hit or miss fashion."

Adjective
  1. 1
    dependent upon or characterized by chance wordnet

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