occasionally, from time to time
Том работает изредка и понемногу.
Tom works occasionally and little by little.
Изредка.
Occasionally.
— Человек с Земли (2007)
Ты, сынок, писал бы ей хоть изредка.
You, son, should write to her at least occasionally.
— Сладкая жизнь (1960)
Том изредка ходит в церковь.
Tom goes to church occasionally.