[na-adj] + な
Verb[plain] + だけで(は)なく(て)
[i-adj] + だけで(は)なく(て)
Variants: だけではなくて / だけでなくて / だけではなく / だけでなく When て is omitted, a comma (、) follows だけで(は)なく
The grammar structure ~だけで(は)なく(て) is used to express "not only ~ but also ~", emphasizing that something has additional qualities or aspects beyond what is initially mentioned.
だけで(は)なく(て): Either は, て, or both can be omitted forming だけでなくて, だけではなく, and だけでなく
When て is omitted, grammatically a comma (、) is required after だけではなく.
だけじゃなく(て) is a more casual form.