hitherto

From Middle English hiderto, corresponding to hither +‎ to.

• (UK) IPA^(key): /ˈhɪðəˌtuː/, /ˌhɪðəˈtuː/, [ˈhɪðəˌtʰuː], [ˌhɪðəˈtʰuː]
• (US) IPA^(key): /ˈhɪðɚˌtu/, /ˌhɪðɚˈtu/, [ˈhɪðɚˌtʰu], [ˌhɪðɚˈtʰu]

• Audio (US):

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hitherto (not comparable)

1. (formal, also law) Up to this or that time or point.

   Synonyms: up to now, heretofore; see also Thesaurus:hitherto

   Antonyms: from now on, henceforth; see also Thesaurus:henceforth

   • 1830, Anna Maria Porter, The Barony, volume 3, page 460:

     The exhaustless conjecturings of that evening's full conversation, made such of the small party, as had hitherto been strangers, well acquainted with each other's turn of mind […]

   • 1910 [1848 February 21], Karl Marx, Friedrich Engels, chapter I, in Samuel Moore, transl., edited by Friedrich Engels, Manifesto of the Communist Party‎^[1], Chicago: Charles H. Kerr & company, page 12:

     The history of all hitherto existing society is the history of class struggles.

   • 2014, James Lambert, “Diachronic stability in Indian English lexis”, in World Englishes, page 124:

     The results of this study argue for a greater endonormativity in Indian English than has hitherto been recognised.

   • 2021 October 20, Paul Stephen, “Leisure and pleasure on the Far North Line”, in RAIL, number 942, page 49:

     North of Tain [...], the line reaches the southern shore of Dornoch Firth. Here, the railway and the A9 trunk road, which have hitherto run close together, diverge.

• thitherto
• whitherto

• “hitherto”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.