IPA: /ˌɒb.səˈlɛs/
KK: /ɑbˈsɒləs/
To go through a process where something becomes outdated or no longer used.
Many technologies tend to obsolesce as new innovations are introduced.
Past: obsolesced
Past Participle: obsolesced
Obsolesce is formed from "ob-" (meaning against) and "solescere" (meaning to become less or to grow weak). The word describes the process of becoming outdated or falling into disuse, as if it is working against its own relevance.
Think of something that is 'growing weak' or 'fading away' ('solescere') as it moves 'against' its former usefulness ('ob-'). This helps you remember that obsolesce means to become outdated.
No commonly confused words.