(every) once in a while

sometimes.

Every once in a while I've been tempted to take an art class.

Related vocabulary: every now and then

• the dead hand of
• the dead hand of something
• the death knell
• the demon drink
• the devil finds work for idle hands.
• the devil take the hindmost
• the dice are loaded against
• the dice are loaded against someone
• the die is cast
• the dog days
• the done thing
• the dreaded lurgy
• the dust settles
• the early bird catches the worm.
• the earth moved
• the ebb and flow
• the ebb and flow of
• the ebb and flow of something
• the end justifies the means.
• the end of the line
• the end of the road
• the eye of the storm
• the factory floor
• the facts of life
• the fag-end of