How to Say "underlying" in Spanish
The Spanish word for “underlying” is “latente” — B2 level.

Examples
Hay un conflicto latente entre los dos socios que podría estallar en cualquier momento.
There is a latent conflict between the two partners that could explode at any moment.
El virus puede permanecer latente en el cuerpo durante muchos años sin causar síntomas.
The virus can remain dormant in the body for many years without causing symptoms.
Ella tiene un talento latente para la pintura que nunca ha explorado.
She has an underlying talent for painting that she has never explored.
One form for everyone
This word doesn't change based on whether the noun is masculine or feminine. You can say 'el problema latente' or 'la amenaza latente'.
Where to put it
In Spanish, 'latente' almost always comes after the thing it is describing to sound natural.
Confusing it with 'heartbeats'
Mistake: “Mi corazón está latente.”
Correction: Mi corazón está latiendo. 'Latente' means hidden, while 'latiendo' comes from 'latir' (to beat).
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