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действенно adv. stresses
gen.	effectively; in a meaningful way (Sergei Aprelikov); effectually; efficaciously; potently (Min$draV); efficiently
fig.	where it counts (Vadim Rouminsky)
действенный adj.
gen.	forceful; effectual (successful in producing the desired results • He was not very effectual as an organiser); efficacious; operative; telling; effective (Adequate to accomplish a purpose; producing the intended or expected result); virtued; operant; powerful (sas_proz); sovereign (о лекарстве); on target (для решения какой-либо проблемы, вопроса и т.п.); authentic (scherfas); working (scherfas); efficient; perficient; impactful (olga garkovik); effective; instrumental (MichaelBurov); capable (qwarty); potent (Abysslooker); operational (MichaelBurov); beneficial (I see how the process you all use might be more beneficial here. Abysslooker)
Игорь Миг	hard-hitting
adv.	valid; instrumental
book.	successful (контекстный перевод igisheva)
context.	hardworking (hardworking formula sankozh)
Makarov.	potent; virtuous; aggressive
med.	active
mil., lingo	can do (MichaelBurov)
progr.	revealing (ssn)

действенно : 123 phrases in 33 subjects

Accounting	1
Advertising	9
Apollo-Soyuz	1
Biology	1
British usage, not spelling	1
Business	2
Clinical trial	3
Diplomacy	7
Drug-related slang	1
Ecology	1
Economic law	1
Economics	5
European Bank for Reconstruction and Development	1
General	36
Grammar	1
Information technology	1
Law	3
Makarov	11
Marketing	2
Medical	2
Military	10
Obsolete / dated	1
Politics	10
Production	1
Programming	2
Psychology	1
Scientific	1
Space	1
Sports	1
Technology	1
Theatre	2
Tibetan	1
Trade unions	1