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retort (1)
retort (2)
retortion
retouch
retrace
retracement
retract
retractile
retraction
retractor
retrain
retraining
retread
retreat
retreatant
retrench
retrial
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retroact

ret·ro·act [ rèttrō ákt ] (past and past participle ret·ro·act·ed, present participle ret·ro·act·ing, 3rd person present singular ret·ro·acts)


intransitive verb 
Definition:
 
1. be in opposition: to act in a way that opposes something else

2. apply to past: to apply to things that have happened in the past

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