understandable
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understandable
In such a way that one can understand it, follow it mentally, and recognize it as logical or plausible.
Ihre Argumente waren klar und für alle im Raum nachvollziehbar.
Her arguments were clear and understandable to everyone in the room.
'Nachvollziehbar' (understandable) is derived from the separable verb 'nachvollziehen' (to understand/follow). It means to understand someone's steps or thoughts. The ending '-bar' means '-able' or 'possible', so 'something that one can nachvollziehen' (understand/follow).
Seine Reaktion war für mich absolut nicht nachvollziehbar.
His reaction was absolutely not understandable to me.
A very common construction is 'Es ist nachvollziehbar, dass ...' (It is understandable that ...). This is followed by a subordinate clause that describes the understandable fact or opinion.
Es ist nachvollziehbar, dass du nach der langen Reise müde bist.
It is understandable that you are tired after the long journey.
The adjective usually describes abstract things. Typical combinations are 'nachvollziehbare Gründe' (understandable reasons), 'ein nachvollziehbares Argument' (an understandable argument), 'eine nachvollziehbare Entscheidung' (an understandable decision), or 'eine nachvollziehbare Erklärung' (an understandable explanation).
Für seine Kündigung nannte er nachvollziehbare Gründe.
He gave understandable reasons for his resignation.
understandable
'verständlich' and 'nachvollziehbar' are close in meaning because both can mean that you can understand something. 'verständlich' is often used for clear language, good explanations, or also for a humanly understandable reaction. 'nachvollziehbar' emphasizes more strongly that you can logically follow the thoughts, reasons, or steps. The words can be confused because both fit with decisions, explanations, and feelings. If something is stated clearly, 'verständlich' is very natural; if you can understand the reason or the process behind it, 'nachvollziehbar' is more precise.
Für die Prüfung ist wichtig, dass jeder Schritt in der Rechnung nachvollziehbar ist.
For the exam, it is important that every step in the calculation is easy to follow.
Am Wochenende erklärt mein Nachbar mir die Regeln sehr verständlich.
At the weekend, my neighbor explains the rules to me very clearly.