| Subject | English | Thesaurus |
| abbr., law | A.F.D.C. | Aid to Families with Dependent Children |
| abbr., law | A.F.L.C.LO. | American Federation of Labor and Congress of Industrial Organization |
| abbr., insur. | c.f.&c. | cost, freight and commission |
| abbr., f.trade. | c .i.f.i. | cost, insurance, freight and interest |
| abbr., f.trade. | c .i.f.i.&e. | cost, insurance, freight, interest and exchange |
| abbr., law | C.A.F | Cost and freight |
| abbr., insur. | C.&.F. | cost and freight |
| abbr., insur. | C.F | carried forward |
| abbr., insur. | C.F | cost and freight |
| abbr., textile | C/F | continuous filament |
| abbr., f.trade. | C&F border | C&F port discharge plus overland freight to point of entry |
| abbr., insur. | C.F.F. | compensatory financing facility |
| abbr., law | C.F.I | cost, freight and insurance |
| abbr., f.trade. | C.f.t | cubic feet |
| abbr., law | C.F.T.C. | Commodity Future Trading Commission |
| abbr., insur. | C.I.F.&C. | cost, insurance, freight & commission |
| abbr., law | C.I.F.C. &.I. | Cost, insurance, freight commission and interest |
| abbr., insur. | C.I.&F. | cost, insurance and freight |
| abbr., insur. | c.i.&f | cost, insurance and freight |
| abbr., insur. | C.I.F | cost, insurance and freight |
| abbr., jewl. | C.I.F. | cost, insurance, and freight |
| abbr., insur. | C.I.F & E. | cost, insurance, freight & exchange |
| abbr., law | C.I.F.& net | Cost, insurance, freight net |
| abbr., law | C.I.F.liner terms | Cost, insurance, freight liner terms |
| abbr., publ.secur. | F.A.C. | firearms acquisition certificate |
| abbr., law | F.C.A. | Federal Credit Administration |
| abbr., law | F.C.A. | Farm Credit Administration |
| abbr., law | F.C.C. | Federal Communications Commission |
| abbr., law | F.C.I.C. | Federal Crop Insurance Corporation |
| abbr., law | F.C.LC. | Federal Crop Insurance Corporation |
| abbr., f.trade. | f.c.s.r.c.c. | free of capture, seizures, riots and civil commotions |
| abbr., f.trade. | F.O.C | free of charge (现略作 free) |
| abbr., insur. | F.O.C. | free of charge (f.O.C.) |
| abbr., f.trade. | f.r. & c.c. | free of riots and civil commotion |
| med. | F.R.C.Path | Fellow of the Royal College of Pathologists (Rive) |
| abbr., f.trade. | F.R.E.C | fire risk extension clause |
| abbr., law | F.T.C | Federal Trade Commission |
| abbr., insur. | G.F.C.F. | gross fixed capital formation |
| abbr., law | R.F.C.A. | Reconstruction Finance Corporation Act |