là-dessus

/la.də.sy/
1.
adverb

on that subject

about that

regarding that

Je ne suis pas d'accord avec toi là-dessus.

I don't agree with you about that.

Synonyms:à ce sujet, sur ce point, à propos
2.
adverb

on top of it

on there

Pose tes clés là-dessus.

Put your keys on there.

Synonyms:dessus