Fast asleep and Out

Related terms

Fast asleep adjective - Sleeping deeply.

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Out and fast asleep are semantically related. In some cases you can use "Out" instead an adjective phrase "Fast asleep".

Out adjective - Fully committed to achieving a goal.

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Fast asleep and out are semantically related. You can use "Fast asleep" instead an adjective "Out".

Cite this Source

Out and Fast asleep. (2016). Retrieved 2026, August 01, from https://thesaurus.plus/related/fast_asleep/out

Fast asleep & Out. N.p., 2016. Web. 01 Aug. 2026. <https://thesaurus.plus/related/fast_asleep/out>.

Out or Fast asleep. 2016. Accessed August 01, 2026. https://thesaurus.plus/related/fast_asleep/out.

Google Ngram Viewer shows how "fast asleep" and "out" have occurred on timeline