Definition of swelter verb from the Oxford Advanced Learner's Dictionary

 

swelter

 verb
verb
BrE BrE//ˈsweltə(r)//
 
; NAmE NAmE//ˈsweltər//
 
[intransitive]Verb Forms present simple I / you / we / they swelter
BrE BrE//ˈsweltə(r)//
 
; NAmE NAmE//ˈsweltər//
 
he / she / it swelters
BrE BrE//ˈsweltəz//
 
; NAmE NAmE//ˈsweltərz//
 
past simple sweltered
BrE BrE//ˈsweltəd//
 
; NAmE NAmE//ˈsweltərd//
 
past participle sweltered
BrE BrE//ˈsweltəd//
 
; NAmE NAmE//ˈsweltərd//
 
-ing form sweltering
BrE BrE//ˈsweltərɪŋ//
 
; NAmE NAmE//ˈsweltərɪŋ//
 
The sun and the moon
 
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to be very hot in a way that makes you feel uncomfortable Passengers sweltered in temperatures of over 90°F. See related entries: The sun and the moon Word Origin Middle English: from the base of dialect swelt ‘perish’, of Germanic origin.
See the Oxford Advanced American Dictionary entry: swelter