gradually
adverb
[ ˈɡradʒʊli ]
• in a gradual way; slowly; by degrees.
• "the situation gradually improved"
Similar:
slowly,
moderately,
unhurriedly,
cautiously,
gently,
gingerly,
circumspectly,
unspectacularly,
piecemeal,
step by step,
little by little,
bit by bit,
inch by inch,
piece by piece,
drop by drop,
by degrees,
progressively,
successively,
continuously,
systematically,
slowly but surely,
regularly,
steadily,
evenly,
constantly,
consistently,
uniformly,
at a regular pace,
inchmeal,
gradatim,