swelter
verb /ˈsweltə(r)/
  /ˈsweltər/
[intransitive]Verb Forms
| present simple I / you / we / they swelter |    /ˈsweltə(r)/   /ˈsweltər/  | 
| he / she / it swelters |    /ˈsweltəz/   /ˈsweltərz/  | 
| past simple sweltered |    /ˈsweltəd/   /ˈsweltərd/  | 
| past participle sweltered |    /ˈsweltəd/   /ˈsweltərd/  | 
| -ing form sweltering |    /ˈsweltərɪŋ/   /ˈsweltərɪŋ/  | 
- to be very hot in a way that makes you feel uncomfortable
- Passengers sweltered in temperatures of over 90°F.
 
Word OriginMiddle English: from the base of dialect swelt ‘perish’, of Germanic origin.