Are the following sentences correct?
He just got up. -- Can I say this, informally?
He just waked up.
We can say either sentence, but waked is used far less often than woke.
He just woke up.
wake (base/infinitive)
woke (simple past)
woken (past participle)
The two sentences have almost the same meaning, and we often use them interchangeably. There is a slight distinction: "He just woke up" tells us that the person is now awake. "He just got up" tells us that the person is now awake and implies that the person also got out of bed.
Waked up
is a very unusual phrase to use these days and was never very popular. A quick check on the Google Ngram server gives a nice graph. Essentially just stick with wake, woke and woken. bit.ly/1IQFXHN
Commented
Jan 16, 2015 at 15:24
It's fine!
He just got up = He just waked up
Both mean informally that he's not sleeping now. He just finished his sleep.
However, it's worth knowing that 'wake up' and 'get up' mean many things other than the context of 'sleeping'. And I consider that you are talking about his state of 'sleeping'.
My answers honestly is that woke up is the best and some times you could say got up but of course you can't say than with someone you can use it in a diary that was an example But it's not common saying waked it's not from proper English