greedily, avidly, eagerly
stingily
to sulk, to pout, to be in a huff
to swell up, to puff up, to balloon
to give oneself airs, to put on airs, to act important
to play avidly (cards), to play away at
Он взахлёб читал новую книгу всю ночь.
He read the new book avidly all night.
