un·tan·gle 
(ŭn-tănggəl)
(ŭn-tănggəl)tr.v. un·tan·gled, un·tan·gling, un·tan·gles
1. To free from a tangle; disentangle. See Synonyms at extricate.
2. To straighten out (something puzzling or complicated); clarify or resolve: The accountant was unable to untangle the company's finances.
- rheometer
- rheostat
- rheostatic
- rheotactic
- rheotaxis
- rhesus
- Rhesus factor
- rhesus monkey
- rhetor
- rhetoric
- rhetorical
- rhetorically
- rhetorical question
- rhetorician
- rheum
- rheumatic
- rheumatic disease
- rheumatic fever
- rheumatic heart disease
- rheumatism
- rheumatoid
- rheumatoidal
- rheumatoid arthritis
- rheumatoid factor
- rheumatologist