Giveaway rhymes with:
breakaway, broadaway, caraway, carraway, castaway, connaway, donaway, dunaway, gallaway, gasaway, getaway, greenaway, hardaway, hataway, hathaway, hideaway, holdaway, laraway, layaway, piscataway, rockaway, runaway, straightaway, throwaway, treadaway
Giveaway sounds like:
gab, gaba, gabay, gabby, gabe, gabie, gaby, gaf, gaff, gaffe, gaffey, gap, gape, gapp, gappa, gasify, gasp, gaspe, gaub, gave, gebbia, gebbie, gebo, geib, geoff, geva, giacobbe, giap, gib, gibb, gibby, gibe, gibeau, giff, giffy, gipe, gipp, giuseppe, give, gob, gobi, gobie, gobioff, goff, goof, goofy, goop, goosby, gopi, gossip, gossipy, gouvea, gouveia, gov, gove, govea, guava, guba, guff, guffaw, guffey, guffy, guppy, gyp