transitive verb-·bled, -·bling
transitive verbun·dou·bled, un·dou·bling, un·dou·bles
(third-person singular simple present undoubles, present participle undoubling, simple past and past participle undoubled)
Part or all of this entry has been imported from the 1913 edition of Webster's Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
un- +"Ž double