Definitions

upstream

[uhp-streem] / ˈʌpˈstrim /

ADJECTIVE

difficult

Synonyms

STRONGEST

ambitious arduous burdensome challenging crucial demanding laborious onerous painful problematic severe strenuous tough troublesome

WEAK

backbreaker bothersome difficile easier said than done effortful exacting formidable galling gargantuan hard-won heavy herculean immense intricate irritating labored no picnic not easy operose problem prohibitive rigid stiff titanic toilsome trying unyielding uphill wearisome

Antonyms

STRONGEST

easy effortless facile helpful nice trivial

WEAK

calm free friendly manageable plain simple sociable straightforward uncomplicated

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.

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upstream

Analysts said BP is building a rationalized upstream pipeline capable of supporting volume growth on the order of about 3% per year between 2030 and 2035.

From MarketWatch ● Sep. 23, 2026

John Hagner, fishing upstream, said he called it “Lake America” at first.

From The Wall Street Journal ● Sep. 19, 2026

Without oversight of the land, protecting the chi has been an upstream battle.

From Los Angeles Times ● Sep. 11, 2026

Nepal and India share one river system, with one country upstream and the other downstream.

From BBC ● Sep. 3, 2026

Seanie added, “Why does this remind me of salmon swimming upstream to spawn and die?”

From "Winger" by Andrew Smith

upstream

Example Sentences

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