Uncollectible rhymes with:
indestructible, nondeductible, contibel, corruptible, imperceptible, incontrovertible, indestructible, interruptible, nondeductible, unadjustable
indestructible, nondeductible, contibel, corruptible, imperceptible, incontrovertible, indestructible, interruptible, nondeductible, unadjustable