1.
If something is seemingly the case, you mean that it appears to be the case, even though it may not really be so.
A seemingly endless line of trucks waits in vain to load up.
= apparently
ADV: ADV adj/adv
2.
You use seemingly when you want to say that something seems to be true.
He has moved to Spain, seemingly to enjoy a slower style of life...
ADV: ADV with cl/group, ADV before v [vagueness]