Following on from yesterday's post on 'bastante', I thought I should mention the related verb 'bastar' - 'to be sufficient' or 'to be enough'. 'Suffice' is probably the closest verb in English, but it is not quite as commonplace.
Some examples are -
¿basta con esto? - is this enough?
basta con cuatro - four are enough
bastan dos cebollas para hacer este plato - two onions are enough to make this dish
My favourite though is when it is used by itself, often shouted, meaning 'Enough!' or 'Stop that!'.
¡Basta! - Enough!