English edit

Etymology edit

exothermic +‎ -ally

Adverb edit

exothermically (comparative more exothermically, superlative most exothermically)

  1. In an exothermic manner
    Aldrichimica Acta Volume 30 No 4 (pdf) from Sigma-Aldrich
    The fused cyclobutenomaleimide is much more reactive than Smith’s diene; it reacts with cyclopentadiene exothermically at room temperature to yield the extended isomer as the major cycloaddition product.