The word 'obtention' is commonly used as a synonym for 'acquisition' or 'attainment', but there are numerous other synonyms that can be used in place of this word. Some of these synonyms include 'acquisition', 'procurement', 'attainment', 'achievement', 'emergence', 'winning', 'fulfilment', 'realization', 'accomplishment', 'capture', 'possession', 'gaining', 'attaining', and 'securing'. Depending on the context, any of these synonyms can be used interchangeably with 'obtention' to convey the same meaning. It's important to choose the right synonym depending on the context of the sentence to ensure that the meaning is conveyed effectively.