thereunder
Under the aforementioned
Thereunder means under that or in accordance with that, referring to something previously mentioned—typically a document, agreement, or legal provision.
The word belongs to formal and legal writing: the contract and all obligations thereunder, rights granted thereunder.
Like other there- compounds (thereof, therein, thereby), it sounds stiff in ordinary speech.
legal
In conformity with
- provisionPreparatory supply or clause
- stipulationCondition in an agreement
- clauseProvision in agreement
- statuteEnacted written rule
subsection · article · regulation · agreement · contract · covenant · terms · conditions
pursuant
In conformity with
- provisionPreparatory supply or clause
- stipulationCondition in an agreement
- clauseProvision in agreement
statute · subsection · article · regulation · agreement · contract · covenant · terms · conditions · compliance