overwhelming
US /ˌoʊ.vɚˈwel.mɪŋ/
UK /ˌoʊ.vɚˈwel.mɪŋ/

1.
very great in amount
:
•
The support from the community was overwhelming.
•
She felt an overwhelming sense of relief.
2.
difficult to deal with
:
•
The amount of work was overwhelming.
•
She found the city to be overwhelming at first.