This is the 4843rd most frequent Catalan word.
sumi
The Catalan word "sumi" is a conjugation of the verb "sumir," meaning "to plunge" or "to sink."
In this sentence, 'sumi' is the subjunctive form of the verb 'sumar' meaning 'to contribute or add' in the first person singular.
Espero que jo sumi al projecte amb les meves idees.
I hope that I contribute to the project with my ideas.
Here, 'sumi' uses the subjunctive form of 'sumar,' which is 'to add,' focusing on mathematical addition in the third person singular.
Que ell sumi tots els números per acabar el càlcul.
Let him add up all the numbers to finish the calculation.
In this usage, 'sumi' is subjunctive for 'sumar,' used in a hypothetical context regarding contributions in discussion.