"Dis-" prefix meaning and etymology [closed]

Solution 1:

The relevant meaning of "dis-" in the OED is:

"With verbs having already a sense of division, solution, separation, or undoing, the addition of dis- was naturally intensive, ‘away, out and out, utterly, exceedingly’, as in disperīre to perish utterly, dispudēre to be utterly ashamed, distædēre to be utterly wearied or disgusted; hence it became an intensive in some other verbs, as dīlaudāre to praise exceedingly, discupĕre to desire vehemently, dissuavīrī to kiss ardently. In the same way, English has several verbs in which dis- adds intensity to words having already a sense of undoing, as in disalter, disaltern, disannul."