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English thesaurus
Officer Projection Aggregate Level System
mil., abbr.	OPALS

Officer : 1641 phrases in 37 subjects

American usage, not spelling	9
Artillery	1
Astronautics	7
Aviation	14
Banking	1
Business	2
Business style	9
Communications	1
Diplomacy	24
Ecology	1
Economics	16
Education	2
English	1
Finances	42
General	112
Government, administration and public services	3
Historical	4
Human resources	1
Human rights activism	10
ICAO	1
Immigration and citizenship	1
Information security and data protection	1
International Monetary Fund	1
Labor law	1
Law	348
Marketing	2
Microsoft	1
Military	987
Name of organization	2
Nautical	20
Police	2
Politics	1
Technology	5
Transport	5
Travel	1
United States	1
Weapons of mass destruction	1