"quejarse mucho" in English

to bitch- to bleat- to murmur- to niggle- to squeal- to whine- to yammer- to complain- to gripe- to groan- to grouch- to grouse- to grumble- to moan- to mouth off- to remonstrate- to repine- to whinge

to complain

a good deal of- a great deal of- a lot of- a lot of- much- a lot of- many

a lot- many- very much- a great deal- hard (trabajar)- heavily- greatly- hard- hard- heavily- much- much- much- some- widely

much- plenty- a long time