Glossary entry (derived from question below)
English term or phrase:
subtly underhanded
Spanish translation:
"silenciosos", que actúan desde las sombras
English term
Spain
Also an interpreter (medical, court)
Native in: Spanish 
Works in: English to Spanish, Spanish to English, French to Spanish, and 3 more.
subtly underhanded
Although the extreme wolves in sheep’s clothing that make headlines grab our attention and pique our curiosity about what makes such people “tick,” most of the covertly aggressive people we are likely to encounter are not these larger-thanlife characters. Rather, they are the subtly underhanded, backstabbing, deceptive, and conniving individuals we may work with, associate with, or possibly even live with.
Thanks
Sep 12, 2018 16:55: changed "Kudoz queue" from "In queue" to "Public"
Sep 18, 2018 15:59: Mónica Algazi Created KOG entry
Proposed translations
Uruguay
ATA-certified English-Spanish translator
Native in: Spanish (Variant: Latin American) 
Works in: English to Spanish
"silenciosos", que actúan desde las sombras
Spain
The Right Word Used in the Right Context
Native in: English (Variant: UK)
Works in: Spanish to English, English to Spanish
algo engañoso/deshonesto
United States
Translating words, preserving meaning
Native in: English
Works in: Spanish to English, English
son los que actúan de [una] manera [más bien] solapada
Spain
Psychologist & Emergency Physician
Native in: Spanish (Variant: Standard-Spain)
Works in: English to Spanish
sutilmente turbios
Spain
Golf, Literature and Religion Specialist
Native in: Spanish
Works in: English to Spanish, French to Spanish, Spanish
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