What does altered mean?
'Altered' describes something that has been changed — in appearance, condition, structure, or character — while still remaining recognizably the same underlying thing. It functions both as the past participle of the verb 'alter' and as an independent adjective, making it one of the most versatile words for expressing modification. A dress that has been taken in at the seams is altered; a document with revised terms is altered; a person transformed by experience may be described as altered. The word implies genuine, observable difference rather than mere adjustment, though usually short of complete transformation. Its connotations are neutral: alterations can be improvements, corruptions, or simply changes. The term appears across registers, from tailoring and law ('altered records') to medicine ('altered consciousness') and psychology ('altered states'). Rooted in the Latin 'alter,' meaning 'other,' it carries a quiet etymological elegance: to alter something is, quite literally, to make it somewhat other than it was.
Past participle of 'alter': having been changed in form, character, or condition.
"The plans were altered after the budget cuts."
Used in perfect constructions ('has been altered') and passives ('was altered').
Describing something that differs from its original or normal state because it has been changed.
"He spoke in an altered voice, barely above a whisper."
Common in medical contexts, e.g. 'altered mental status.'
The word traces back to the Latin 'alter' — meaning 'the other' — so every time something is altered, it literally becomes a little bit 'other' than itself.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of altered
'Altered' derives from the verb 'alter,' which entered English from Old French 'alterer' in the late Middle Ages, ultimately rooted in the Latin 'alter,' meaning 'the other' or 'second of two.' This same Latin root gave English several related words, including 'alternative,' 'altercation,' and, through Romance intermediaries, 'altruism.' The sense of making something 'other' than it was has remained remarkably stable across centuries of use.
Related word forms
How altered is actually used
As an adjective, 'altered' typically implies a change that is real and perceptible yet not complete — a garment can be altered without becoming a different garment. It carries a neutral register, appearing equally in formal legal writing ('altered documents') and everyday speech ('an altered plan'). In medical and psychological contexts, 'altered' often signals deviation from a normal baseline, as in 'altered mental status.'
Easily confused with altered
'Altered' means changed in some way, while 'altar' is a noun denoting a raised structure used for religious rites.