Conceivably means you can imagine that this is so — it is possible, at least in the mind. She could conceivably win does not mean she probably will; it means it is not crazy to picture her winning.

Conceivably means you can imagine that this is soconceivably的意思是你可以想像這是真的 it is possible, at least in the mind至少在腦中是有可能的 She could conceivably winshe could conceivably win（她或許有可能贏） does not mean she probably will不代表她大概會贏 it means it is not crazy to picture her winning意思是想像她贏並不離譜

Though actually, in real use this adverb often sits between maybe and probably not. Speakers use it when they want to leave a small door open: yes, it could happen, but I am not saying it is likely.

Though actually不過事實上 in real use this adverb often sits between maybe and probably not這個副詞在實際使用時常常介於maybe和probably not之間 Speakers use it when they want to leave a small door open說話的人用它是想留一道小小的門 yes, it could happen對，這是可能發生的 but I am not saying it is likely但我不是說這很有可能

It is a bit formal. In chat people say possibly or I guess they might.

It is a bit formal這個字有點正式 In chat people say possibly or I guess they might在聊天時大家會說possibly或I guess they might

It is the adverb from conceivable, so it is about how possible something is to imagine. The other meaning of conceive (to become pregnant) does not travel into this adverb in ordinary use.

It is the adverb from conceivable它是從conceivable變來的副詞 so it is about how possible something is to imagine所以講的是一件事有多可能被想像出來 The other meaning of conceive (to become pregnant)conceive的另一個意思（懷孕） does not travel into this adverb in ordinary use在日常用法裡不會出現在這個副詞身上