Belarusian orthography reform of 1933

The orthography of the Belarusian language was reformed in 1933 during the Soviet era.

Differences between the old and the new orthography

 * 1) The soft sign ⟨ь⟩  is no longer written when denoting assimilation of 'softness': ⟨песня⟩, ⟨свет⟩, instead of ⟨песьня⟩, ⟨сьвет⟩.
 * 2) The soft sign is no longer written between double consonants: ⟨каханне⟩, instead of ⟨каханьне⟩.
 * 3) The particle ⟨не⟩ and the preposition ⟨без⟩ are written unchanged, independently of pronunciation: ⟨не быў⟩, instead of ⟨ня быў⟩; and ⟨без мамы⟩, instead of ⟨бяз мамы⟩ (compare with English definite article "the").
 * 4) Loanword orthography is regulated:
 * 5) * Akanye is preserved in all cases except ten words (such as ⟨рэволюцыя⟩, ⟨совет⟩ instead of ⟨рэвалюцыя⟩, ⟨савет⟩; these exceptions were abolished in 1959)
 * 6) * Central-European L is transmitted as hard and not soft, as in Russian
 * 7) * The variants of writing the sound of ⟨ф⟩ with letters ⟨п⟩, ⟨хв⟩, ⟨х⟩, ⟨т⟩ are removed
 * 8) * The endings ⟨-тар⟩, ⟨-дар⟩ are replaced with ⟨-тр⟩, ⟨-др⟩, for example: ⟨літр⟩, instead of ⟨літар⟩
 * 9) * The endings ⟨-ый⟩, ⟨-iй⟩ are used where appropriate, for example: ⟨алюміній⟩ instead of ⟨алюміні⟩.
 * 10) The orthography of personal names is regulated so that vernacular forms are replaced with canonical Orthodox forms, for example: ⟨Юрый⟩ instead of ⟨Юрка⟩, ⟨Юры⟩, ⟨Юра⟩ or ⟨Юрась⟩.
 * 11) In morphology, the ending ⟨-а⟩/⟨-у⟩ denoting genitive case is regulated as ⟨-а⟩, as in Russian, and not as ⟨-у⟩, as in certain modern dialects. Also unified is the spelling of names in dative and prepositional case.