English
Adverb
abstrusely (comparative more abstrusely, superlative most abstrusely)
- In an abstruse manner. [First attested in the early 17th century.][1]
References
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↑ Lesley Brown (editor), The Shorter Oxford English Dictionary, 5th edition (Oxford University Press, 2003 [1933], ISBN 978-0-19-860575-7), page 10