Gradually
51work off — gradually remove …
52work up an appetite — gradually become hungry, develop an appetite …
53die down — gradually stop, diminish, drop off When the laughter died down, I found my false teeth, put them in my mouth, and said, Excuse me …
54peter out — gradually lose power, reduce, run out After 6, sales began to peter out. We had fewer customers …
55suffuse — Gradually spreading over the surface and serving to color or tint, as with a fluid or a gleam of light …
56little by little — gradually He broke his leg while skiing but little by little it is getting better …
57step by step — gradually He has made a great effort and step by step he has learned how to use a computer …
58be suffused with — gradually spread through or over. → suffuse …
59bit by bit — gradually. → bit …
60chip away at — gradually and relentlessly make (something) smaller or weaker: → chip …