lag·gard 
(lăgərd)
(lăgərd)n.
One that lags; a straggler.
adj.
Slow or delayed in action. See Synonyms at slow.
laggard·ly adv.
laggard·ness n.
- radiologist
- radiology
- radiolucency
- radiolucent
- radiolysis
- radiolytic
- radioman
- radiometer
- radiometric
- radiometric dating
- radiometry
- radiomimetic
- radionuclide
- radiopacity
- radiopaque
- radiopharmaceutical
- radiophone
- radiophonic
- radiophoto
- radiophotograph
- radiophotography
- radioscopic
- radioscopical
- radioscopy
- radiosensitive