cloned — Simple past tense and past participle of clone.
droned — to make a dull, continued, low, monotonous sound; hum; buzz.
groaned — Simple past tense and past participle of groan.
honed — a whetstone of fine, compact texture for sharpening razors and other cutting tools.
moaned — a prolonged, low, inarticulate sound uttered from or as if from physical or mental suffering.
owned — of, relating to, or belonging to oneself or itself (usually used after a possessive to emphasize the idea of ownership, interest, or relation conveyed by the possessive): He spent only his own money.
toned — any sound considered with reference to its quality, pitch, strength, source, etc.: shrill tones.
zoned — any continuous area that differs in some respect, or is distinguished for some purpose, from adjoining areas, or within which certain distinctive circumstances exist or are established: The decisions were formulated in a zone of uncertainty. The temperature lies outside the danger zone.
Two-syllable rhymes
bemoaned — to express distress or grief over; lament: to bemoan one's fate.
condoned — to disregard or overlook (something illegal, objectionable, or the like): The government condoned the computer hacking among rival corporations.
dethroned — Simple past tense and past participle of dethrone.
disowned — Simple past tense and past participle of disown.
postponed — to put off to a later time; defer: He has postponed his departure until tomorrow.