undeclared

adj.

未申报的，未经宣战的；

1. An undeclared war.
   未正式宣布的战争

Backlash: The Undeclared War Against Women
Fiddly Jobs, Undeclared Working and the Something for Nothing Society
Presence of undeclared peanut protein in chocolate bars imported from Europe.
Survey on the Shadow Economy and Undeclared Earnings in OECD Countries
‘Undeclared Work in an Enlarged Union -An Analysis of Undeclared Work: An In-Depth Study of Specific Items
Contamination of animal feedingstuffs with undeclared antimicrobial additives
Recalls of foods containing undeclared allergens reported to the US Food and Drug Administration, fiscal year 1999
Analysis of undeclared synthetic phosphodiesterase-5 inhibitors in dietary supplements and herbal matrices by LC–ESI–MS and LC–UV
Systemic Allergic Reaction Following Ingestion of Undeclared Peanut Flour in a Peanut-Sensitive Woman
Chinese proprietary medicine in Singapore: regulatory control of toxic heavy metals and undeclared drugs