coherent in WordNet English dictionary

1. marked by an orderly, logical, and aesthetically consistent relation of parts
   "a coherent argument"
   coherent  consistent  logical  ordered 
   
2. (physics) of waves having a constant phase relation
   coherent 
   
3. sticking together
   "two coherent sheets"; "tenacious burrs"
   coherent  tenacious 
   
4. capable of thinking and expressing yourself in a clear and consistent manner
   "a lucid thinker"; "she was more coherent than she had been just after the accident"
   coherent  logical  lucid