Permitting a spontaneous or unstructured response.
Of a straight draw, made up of four consecutive cards, thus able to be completed by either of two ranks of card.
Adaptable to change.
Unrestricted by definite limits.
There will be an open-ended discussion.
Existing only for a short time or short times; transient, ephemeral.
Not permanent; existing only for a period or periods of time.
A temporary variable.
One serving for a limited time; short-term employee.