Dictionary.com
Thesaurus.com

unaccounted

British  
/ ˌʌnəˈkaʊntɪd /

adjective

  1. missing

    as many as 100 people are unaccounted for

  2. not included in an account

    70 million dollars of unaccounted money

  3. not explained adequately

    unaccounted friendliness

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

While scientists have identified several processes that contributed to water loss, much of Mars' missing water is still unaccounted for.

From Science Daily • Mar. 27, 2026

After the blast, sheriff officials said the second device was unaccounted for and missing.

From Los Angeles Times • Mar. 25, 2026

A US deep-sea treasure hunter who refused to disclose the location of a famed shipwreck's gold coins has been released from prison after a decade, with 500 coins still unaccounted for.

From BBC • Mar. 14, 2026

First Brands acknowledged that more than $2 billion of investors’ money was unaccounted for, its chief executive resigned, and the Justice Department announced a probe, the Journal reported.

From The Wall Street Journal • Mar. 6, 2026

Of the 400,000 Ottoman Christians in Smyrna before the fire, 190,000 were unaccounted for by October 1.

From "Middlesex: A Novel" by Jeffrey Eugenides