50 entries under idiom topic. ×

1
out the window(expression, split, away, lacking)
1
past and gone
1
set at rest
1
taken a powder(expression, split, away, lacking)
1
turned to dust(expression, split, away, lacking)
1
water over the dam(expression, adjective, dead, past)
1
water under the bridge(expression, adjective, dead, past)
0
all bets off
0
at an end
0
pushing up daisies(expression, adjective, live, death)
0
be no more(expression, inexistence)
0
become extinct(expression, inexistence)
0
by no means
0
cease to exist(expression, inexistence)
0
cut short
0
dead person
0
departed this life(expression, death)
0
great auk
0
have no existence(expression, inexistence)
0
having died out
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APASmart Define. (2016). extinct thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/extinct/thesaurus/synonyms
ChicagoSmart Define. 2016. "extinct thesaurus" https://smartdefine.org/extinct/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, extinct thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/extinct/thesaurus/synonyms>.
MLASmart Define. "extinct thesaurus" 10 February 2016. Web. 22 September 2026. <https://smartdefine.org/extinct/thesaurus/synonyms>