The hall was suffocatingly crowded.
Source: wiktionary
Suffocatingly
Synonyms for "suffocatingly"
Ranked by relevance and common usage.
Sample sentences
2 total sentences available.
[...] then, after about ½-mile of level through Pilning the climb is resumed at 1 in 100 for another three miles, including over a mile through a suffocatingly smoky single line tunnel (the down line being on a different and steeper location) to Patchway station.
Source: wiktionary