Dictionary.com
Thesaurus.com
Synonyms

lightening

American  
[lahyt-n-ing] / ˈlaɪt n ɪŋ /

noun

Medicine/Medical.
  1. the descent of the uterus into the pelvic cavity, occurring toward the end of pregnancy, changing the contour of the abdomen and facilitating breathing by lessening pressure under the diaphragm.


lightening British  
/ ˈlaɪtənɪŋ /

noun

  1. obstetrics the sensation, experienced by many women late in pregnancy when the head of the fetus enters the pelvis, of a reduction in pressure on the diaphragm, making it easier to breathe

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of lightening

First recorded in 1520–30; lighten 2 + -ing 1

Compare meaning

How does lightening compare to similar and commonly confused words? Explore the most common comparisons:

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Levanon said he can’t prove it yet, but he’s convinced it’s the lightening speed and adoption of artificial intelligence.

From MarketWatch Aug. 20, 2026

Another reason such layoffs may prove to be temporary: In many cases AI seems to shift the burden of work to those who are most skilled at using it, rather than lightening the load overall.

From The Wall Street Journal Jun. 21, 2026

Still, even when dealing with corpses, Walker’s characters can deftly deliver a one-liner or a bad pun when the mood needs lightening; she doesn’t really think along drama versus comedy lines.

From Los Angeles Times Jun. 9, 2026

The data, from the workforce analytics and productivity-tracking software company ActivTrak, found that AI is making workloads more intense, not lightening them.

From The Wall Street Journal Mar. 18, 2026

The lights shining from the city’s many windows gave it a festive look, and Gregor felt his heart lightening a little.

From "Gregor the Overlander" by Suzanne Collins

Vocabulary.com logo
by dictionary.com

Join 12,000,000 vocabulary learners

Start learning new words today on VocabTrainer.
You'll remember them forever.

Start training