1. (

• occasional

) occurring from time to time; "took an occasional glass of wine" ;

2. (

• episodic ,
• occasional

) occurring or appearing at usually irregular intervals; "episodic in his affections"; "occasional headaches" ;

3. (

• casual ,
• occasional

) occurring on a temporary or irregular basis; "casual employment"; "a casual correspondence with a former teacher"; "an occasional worker" ;

4. (

• periodic ,
• occasional

) recurring or reappearing from time to time; "periodic feelings of anxiety" ;