unaltered
adj. B2 Upper Intermediate US //əˈnɔɫtɝd// UK //ʌnˈɒltəd// un·al·tered
adj. not changed at all. You use this to describe something that stays exactly the same as it was before.
adj. not changed or modified in any way. Often used to describe data, physical objects, or states that remain in their original condition.
The old house remains in its unaltered state.
The software ensures that the original file remains unaltered even after the backup process is complete.
The researchers noted that the chemical properties of the sample remained unaltered despite being exposed to extreme temperatures for several hours.
From un- + altered.