Definitions

1. adjective

resembling or characteristic of a tomb; gloomy, somber, and often grand in a way that is associated with ancient burial places

“The old, tomblike mausoleum stood silently in the middle of the overgrown cemetery.”

2. adjective (attributive)

used to describe something that is like a tomb, especially in being gloomy or somber

“The tomblike atmosphere of the abandoned mansion sent shivers down her spine.”