Ominous
On board
On board adverb - On a ship, train, plane or other vehicle.
Ominous and on board are semantically related in about to happen topic. Sometimes you can use "Ominous" instead an adjective phrase "On board".
Cite this Source
On board and Ominous. (2016). Retrieved 2026, August 08, from https://thesaurus.plus/related/ominous/on_board
Ominous & On board. N.p., 2016. Web. 08 Aug. 2026. <https://thesaurus.plus/related/ominous/on_board>.
On board or Ominous. 2016. Accessed August 08, 2026. https://thesaurus.plus/related/ominous/on_board.
Google Ngram Viewer shows how "ominous" and "on board" have occurred on timeline