This is the 4510th most frequent German word.
mutmaßlicher
"Mutmaßlicher" means "alleged" or "presumed."
Here, 'mutmaßliche' is used as an adjective meaning 'suspected' or 'presumed', characterizing the noun 'Täter' (perpetrator).
Der mutmaßliche Täter wurde gestern verhaftet.
The suspected perpetrator was arrested yesterday.
In this context, 'mutmaßliche' functions as an adjective meaning 'presumed', describing 'Gründe' (reasons) and implying uncertainty or hypothesis.
Mutmaßliche Gründe für die Verzögerung könnten technische Probleme sein.
Presumed reasons for the delay could be technical problems.
The word 'mutmaßlichen' here serves as an adjective whose form agrees with 'Beteiligten' (participants), indicating individuals assumed to be involved based on available information.