Correct

发福

/ fāfú /
Strokes

Definition

to put on weight/to get fat (a sign of prosperity, so a compliment)

Example

As a Verb

(usu of an adult) put on/gain weight; become plump/portly

1
Nín
发福
le
  

You've become portly. / You are rounding out. / You've put on weight.

2
发福
shǎo
不少

gain much weight