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Webster 1913 Edition
Untwist
Un-twist′
,Verb.
 T.
 [1st pref. 
un- 
+ twist
.] 1. 
To separate and open, as twisted threads; to turn back, as that which is twisted; to untwine. 
If one of the twines of the twist do 
The twine that
untwist
,The twine that
untwisteth
, untwisteth 
the twist. Wallis.
2. 
To untie; to open; to disentangle. 
Milton.
 Webster 1828 Edition
Untwist
UNTWIST'
, v.t.1.
  To separate and open, as threads twisted; or to turn back that which is twisted.2.
  To open; to disentangle; as intricacy.Definition 2025
untwist
untwist
English
Verb
untwist (third-person singular simple present untwists, present participle untwisting, simple past and past participle untwisted)
- Remove a twist (from)