prolonged
CEFR: C1
Continuing for a large or extended duration in time, often beyond normal or desirable limits (e.g. 'prolonged flight', 'prolonged exposure').
Synonyms
- protracted
- extended
- sustained
Common Collocations
- prolonged exposure
- prolonged illness
- prolonged drought
Example Sentence
High-altitude bombers required supercharged engines to sustain prolonged operational flights across continental distances.