on occasion

Adverb

• now and then or here and there
  • he was arrogant and occasionally callous
    
  • open areas are only occasionally interrupted by clumps of trees
    
  • they visit New York on occasion
    
  • now and again she would take her favorite book from the shelf and read to us
    
  • as we drove along, the beautiful scenery now and then attracted his attention
    

Related words

• Synonyms: 
  occasionally , once in a while , now and then , now and again , at times , from time to time