to change continually; shift back and forth; vary irregularly: The price of gold fluctuated wildly last month.
to move back and forth in waves.
to cause to fluctuate.
- non·fluc·tu·at·ing, adjective
- un·fluc·tu·at·ing, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use fluctuate in a sentence
They might instead represent a relational measure that connects an organism’s constitution with fluctuating information from the world.Our Mind-Boggling Sense of Smell - Issue 91: The Amazing Brain | Ann-Sophie Barwich | October 14, 2020 | Nautilus
The Constitution says nothing about how many justices there must be on the Supreme Court, and over time, the number has fluctuated.What is court packing, and why are some Democrats seriously considering it? | Amber Phillips | October 8, 2020 | Washington Post
Concentrations of smoke can also fluctuate from day to night, especially where the terrain is complex.Wildfire smoke travels far but never really disappears | Juliet Grable | October 7, 2020 | Popular-Science
“A guaranteed buy like Platform Burst could interest advertisers because it removes the uncertainty of fluctuating costs in an auction,” said Carly Carson, director of social at digital agency PMG.Snapchat is pitching high-frequency, high-reach ‘Platform Burst’ ad campaigns | Seb Joseph | September 28, 2020 | Digiday
Finally in August, a specialist in Anchorage told Stewart she may have a rare and incurable connective tissue disorder, as well as a condition related to her low blood pressure and fluctuating heart rate.Her Stepfather Admitted to Sexually Abusing Her. That Wasn’t Enough to Keep Her Safe. | by Nadia Sussman | September 18, 2020 | ProPublica
These rankings are much touted, constantly fluctuating, and meaningless.
The tablet, which Fujitsu hopes to release as early as 2015, works by fluctuating the friction between your finger and the screen.
Gender fluid people may have dynamic or fluctuating understandings of their gender, moving between categories as feels right.What Each of Facebook’s 51 New Gender Options Means | Debby Herbenick PhD, Aleta Baldwin | February 15, 2014 | THE DAILY BEAST
Now, 25 days later, the crowd—fluctuating from tens to hundreds of thousands—has taken on a life of its own.Parliamentarian Lesya Orobets on the Myth of a Divided Ukraine | Will Cathcart | December 16, 2013 | THE DAILY BEAST
The tent's digital glow and fluctuating lighting evoked a very, very fancy wedding.
The sober people of America are weary of the fluctuating policy which has directed the public councils.Select Speeches of Daniel Webster | Daniel Webster
Ideas are fluctuating, transitory, and 'come into the mind unbidden.'The English Utilitarians, Volume II (of 3) | Leslie Stephen
He closed his eyes as he sat in his room, the fluctuating colors on the walls going unappreciated.Pagan Passions | Gordon Randall Garrett
There were many schemes fluctuating through his brain, and all accompanied by many doubts.The Prime Minister | Anthony Trollope
One sat by his side fanning him as he slept, her hand on the feeble, fluctuating pulsations which foreboded sad results.Nurse and Spy in the Union Army | S. Emma E. Edmonds
British Dictionary definitions for fluctuate
to change or cause to change position constantly; be or make unstable; waver or vary
(intr) to rise and fall like a wave; undulate
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