(Judaism) To take part in the shiva mourning ritual.

To stay awake past one's usual time in order to care for one or keep one company. / To remain with an individual through the night, especially with an ill or troubled person.

present participle of sit idly by

To remain close or stand aside while refraining from acting or intervening.

present participle of sit up with

present participle of sit shiva

present participle of sit back

present participle of sit tight

plural of sit-com

Alternative spelling of sitcom