What could be word for something which you can only partially remember? hardly recall/recollect? [duplicate]
Solution 1:
An example of this could be a "hazy" or "vague" recollection. Assuming you're looking for a word that means to partially recall something.
"hazy": https://dictionary.cambridge.org/dictionary/english/hazy
"vague": https://dictionary.cambridge.org/dictionary/english/vague
Solution 2:
Well, let me offer you not a word but an idiom: on the tip of (one's) tongue
According to the Free Dictionary
- If something such as a word, answer, or name is on the tip of your tongue, you know it and can almost remember
You can almost remember Peter's surname but not fully complete.
As pointed by @nnnnn, notice that it also applies when you can't remember any part of the word you're trying to think of, it's not specific to remembering part of the word.