This is the 139th most frequent Indonesian word.
membantu
To help.
Here, 'membantu' (to help) is used to express the act of aiding someone in completing a task.
Dia membantu temannya menyelesaikan tugas sekolah.
He helped his friend complete the school assignment.
In this sentence, 'membantu' functions as a verb in a generic statement about the act of helping.
Membantu orang lain adalah perbuatan yang mulia.
Helping others is a noble deed.
The use of 'membantu' denotes an effort to assist within the speaker's capacity.