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Definitions

index

[in-deks] / ˈɪn dɛks /
NOUN
indication
Synonyms
STRONGEST
indicator ratio
STRONG
basis clue evidence formula guide hand indicant indication mark model needle pointer rule sign symbol symptom token
WEAK
indicia significant
VERB
arrange, order
Synonyms
STRONG
alphabetize catalogue docket file list record tabulate
Antonyms
WEAK
disarrange disorder disorganize

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.

Missing the market’s 10 best days can drastically reduce long-term returns; diversification through index funds helps weather volatility.

From Barron's • Apr. 8, 2026

The 200-day average for the index, an important technical indicator for the market, currently stands around 6617, according to the co-founder and head of research at Fundstrat.

From MarketWatch • Apr. 8, 2026

Australia’s S&P/ASX 200 benchmark index was up 2.5%.

From The Wall Street Journal • Apr. 8, 2026

Evidence of of how much the recent surge in energy costs has impacted broader price pressures will be provided on Friday, when the U.S. consumer price index data for March will be published.

From MarketWatch • Apr. 8, 2026

The index had the word, but rather than listing a page to turn to, it said in dark letters: Don't even think of such a thing!

From "Jeremy Thatcher, Dragon Hatcher" by Bruce Coville