DINK or dink 
(dĭngk)
(dĭngk)n.
A member of a couple who both hold jobs and have no children.
[D(ual) I(ncome) N(o) K(ids).]
- radiography
- radioimmunoassay
- radioimmunological
- radioimmunology
- radioiodine
- radioisotope
- radiolabel
- radiolarian
- radiolocation
- radiologic
- allocation
- allocator
- allochthon
- allochthonous
- allocution
- all of
- all of a sudden
- allogamy
- allogeneic
- allogeneically
- allogenic
- allograft
- allograph
- allographic
- allomeric