63 entries under idiom topic. ×

1
only one time(expression, adjective, adverb, past)
1
used to be(expression, adverb, earlier, then)
1
water under the bridge(expression, adverb, earlier, then)
1
way back when(expression, adjective, late, old)
0
all at once
0
anno regni(expression, time)
0
anno urbis conditae(expression, time)
0
at a time
0
children's story opener
0
ere now(expression, the past)
0
ex post facto(expression, the past)
0
fairy tale start
0
from prehistoric times(expression, the past)
0
from time immemorial(expression, the past)
0
in case
0
in earlier times
0
in former days
0
in old days(expression, hitherto, sometime, erewhile)
0
in olden times
0
some other time
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APASmart Define. (2016). once thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/once/thesaurus/synonyms
ChicagoSmart Define. 2016. "once thesaurus" https://smartdefine.org/once/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, once thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/once/thesaurus/synonyms>.
MLASmart Define. "once thesaurus" 30 March 2016. Web. 26 September 2026. <https://smartdefine.org/once/thesaurus/synonyms>