Lewis & Short

ĭn-aestĭmābĭlis, e, adj.

  1. I. In gen., that cannot be estimated or judged of: nihil tam incertum nec tam inaestimabile est quam animi multitudinis, so little to be counted upon, Liv. 31, 34, 3.
  2. II. In partic.
    1. A. Inestimable, invaluable, incalculable: quod e grege se imperatorum, velut inaestimabilem, secrevisset, Liv. 35, 14, 12: gaudium, id. 29, 32, 2: monumentum occasionis, Val. Max. 4, 8, 1.
    2. * B. Not worthy to be esteemed, valueless, opp. aestimabile, Cic. Fin. 3, 6, 20.