Willamette rhymes with:
bamut, gamut, mamet, sammut, aamodt, animate, approximate, bamut, climate, comet, consummate, delashmutt, dermot, dermott, emmott, estimate, gamut, helmet, helmut, hermit, howmet, inanimate, intimate, jemmott, legitimate, limit, lumet, macdermott, mamet, mcdermitt, mcdermot, mcdermott, mehmet, memmott, microclimate, ozmet, penultimate, permut, plummet, proximate, sammut, shawmut, summit, ultimate, vomit, willmott, wilmot, wilmott, wilmut
Willamette sounds like:
walenta, walmond, walnut, wayland, weiland, welland, weyland, wheeland, wieland, wiland, willmott, wilmet, wilmeth, wilmette, wilmot, wilmoth, wilmott, wilmouth, wilmut, wohlwend, wyland