What does decreased mean?
'Decreased' is the past tense and past participle of the verb 'decrease', and it also serves as an adjective describing anything that has become smaller in amount, number, size, intensity, or degree. It appears constantly in formal contexts — financial reports note that profits decreased, scientists record that populations decreased, and clinicians describe decreased appetite or decreased function. Compared with blunter alternatives like 'fell', 'dropped', or 'shrank', it carries a neutral, measured tone suited to statistics and technical writing, though in everyday conversation speakers tend toward those simpler verbs. The word traces back through Old French 'decreistre' to Latin 'decrescere', formed from 'de-' (indicating reversal) plus 'crescere' (to grow), the same root behind 'increase', 'crescent', and 'accrue'. Its opposite is 'increased', and the pair forms one of the most fundamental contrasts for expressing change.
Past tense and past participle of 'decrease': to have become smaller or less in amount, number, size, or degree.
"Unemployment decreased steadily throughout the decade."
Typically used with quantities and measurable phenomena rather than with abstract qualities.
Reduced or diminished; made or become smaller, as in 'decreased production' or 'decreased sensitivity'.
"The patient showed decreased mobility following the surgery."
Hidden inside 'decreased' is the Latin 'crescere', meaning to grow — the same root that gives us 'crescent' and 'increase', making 'decrease' literally an un-growth.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of decreased
'Decreased' derives from the verb 'decrease', which entered English from Old French 'decreistre' in the late Middle English period, ultimately from Latin 'decrescere' — a compound of 'de-' (down, away) and 'crescere' (to grow, arise). The same Latin root yields 'increase' (from 'increscere'), 'crescent', 'crescendo', and 'accrue', making 'decrease' and 'increase' etymological twins distinguished only by their prefixes. The adjective use ('decreased appetite') developed naturally from the participial form.
Related word forms
How decreased is actually used
Common in formal, scientific, medical, and statistical registers; in casual speech people often prefer simpler verbs like 'dropped' or 'fell'. When used attributively before a noun (e.g., 'decreased appetite'), it functions adjectivally and is especially frequent in technical writing.
Easily confused with decreased
'Increase' means to grow larger, while 'decrease' means to become smaller — they are direct opposites despite sharing a similar form.
'Decrement' is chiefly a technical noun (or computing operation) denoting the amount by which something decreases, whereas 'decreased' is an everyday verb form or adjective.