This is the 12516th most frequent German word.
wahrscheinlich
Probably.
Here, 'wahrscheinlich' is used as an adverb to express a high probability about the future occurrence of the event.
Es wird wahrscheinlich morgen regnen.
It will probably rain tomorrow.
In this sentence, 'wahrscheinlich' is used as part of the superlative 'wahrscheinlichste', describing the solution that is most probable.
Die wahrscheinlichste Lösung für dieses Problem ist ein Gespräch.
The most likely solution for this problem is a conversation.
Here, 'wahrscheinlich' functions as an adverb to indicate a conjecture or inference about the situation.