[ˈɡɑːs(t)li], (Adjective)

Definitions:
- causing great horror or fear
(e.g: one of the most ghastly crimes ever committed)

- extremely unwell
(e.g: she had sobered up but she felt ghastly)

- very objectionable, bad, or unpleasant
(e.g: the weather was ghastly)


Phrases:

Origin:
Middle English: from obsolete gast ‘terrify’, from Old English gǣstan, of Germanic origin; related to ghost. The gh spelling is by association with ghost. The sense ‘objectionable’ dates from the mid 19th century