different between unthink vs undream

English

Etymology

un- +? think

Verb

unthink (third-person singular simple present unthinks, present participle unthinking, simple past and past participle unthought)

1. (transitive, intransitive) To undo the process of thinking.
   • 1930, G. K. Chesterton, The Resurrection of Rome

     They at least had the immense and mighty imagination of which I speak; they could unthink the past. They could uncreate the Fall. With a reverence which moderns might think impudence, they could uncreate the Creation.

   • 2006, Kirsten Shepherd-Barr, Science on Stage: From Doctor Faustus to Copenhagen

     In An Experiment with an Air-Pump, characters repeatedly assert that "once you've thought something, you can't unthink it, can you?"

See also

• unring

English

Etymology

un- +? dream

Verb

undream (third-person singular simple present undreams, present participle undreaming, simple past and past participle undreamed or undreamt)

1. (transitive) To dismiss from the imagination as though never dreamed.
   • 1876, Fanny Wheeler Hart, Miss Hitchcock's Wedding Dress

     Dreams, whether waking or sleeping ones, continue part of us. We can't undream them. We are roused out of them, but they remain.

Synonyms

• unimagine

Hypernyms

• unthink

Anagrams

• Mundare, duramen, manured, maunder, unarmed