hammer away
• work hard and persistently.
• "for six months I have been hammering away at a plot"
Similar:
work hard,
labour,
slog away,
plod away,
grind away,
slave away,
work like a Trojan,
work like a dog,
persist with,
persevere with,
keep on with,
press on with,
not cease from,
stick at,
peg away at,
beaver away at,
plug away at,
work one's socks off on,
sweat blood for,
soldier on with,
kill oneself with,
graft away at,
drudge away at,
