IPA: /ˌɒb.səˈlɛs.ənt.li/
KK: /ɑbˈsɒləsəntli/
In a way that is becoming outdated or no longer useful.
The technology was obsolescently replaced by newer innovations.
Obsolescently → It is formed from "obsolescent" (from Latin "obsolescere", meaning to fall into disuse) and the suffix "-ly" (meaning in a manner of). The word "obsolescently" describes something that is becoming outdated or falling into disuse in a certain manner.
Think of something that is 'falling into disuse' ('obsolescent') and how it is happening 'in a manner' ('-ly'). This helps you remember that 'obsolescently' refers to the way something is becoming outdated.