Here's what rhymes with sigmodontine.
genie pontine teeny beanie genii briny sheeny weenie weeny blini meanie wienie meany serine nomine bikini martini terrine patinae leucine carinii valine zucchini tortellini tyrosine leonine saturnine fettuccine gaberdine linguine signorine methionine threonine kerosine Words that almost rhyme with sigmodontine
dreamy steamy seamy creamy banditti beady cheeky cheesy peaty tipi beefy peachy peaky chichi peewee teensy peachier chiefly deeply treaty viii ideally keenly needy speedy cheaply leafy specie leaky nisi breezy fieri meanly seedy steely weedy mealy meaty reedy kiwi midi wheezy genteelly preachy weepy geeky phoebe tweedy lychee wheelie weensy wheelies weepie preachier freely briefly weekly query uneasy greedy neatly routinely weakly feebly greasy sleepy steeply beastly cleanly entreaty meekly naively gipsy libri principe seemly creepy fleecy queasy queenly sleazy sneaky sweetie tsetse bleakly creaky measly streaky unready freaky wapiti yeasty freebie greenly sleety dashiki cliquey seemlier freebee obliquely priestly sweetly xviii unseemly unwieldy xxviii xxxviii biweekly squeaky speakeasy squeegee uncleanly fleetly sleekly stormily greenfly screechy umbilici biyearly unseemlier screechier completely uniquely graffiti barbarically extremely discreetly inferiorly discretely semiweekly semiyearly incompletely indiscreetly