For the challenge, GCHQ posted a code at www.canyoucrackit.co.uk and invited British citizens to solve it. The code consisted of 160 letters and numbers arranged in a rectangular display.
Source: wiktionary
Gchq
Synonyms for "gchq"
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Related word relations
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Sample sentences
2 total sentences available.
I was inside Government Communications Headquarters, invariably called GCHQ. It's the UK's technical spy agency, only admitted to exist by the government in 1994.
Source: wiktionary
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.