Attempts to resolve the Quandary:
6
Though his use of 'hereditary' during conversations about receding hairlines seemed unobtrusively appropriate, and its repetition in response to discussions about affairs in the family seemed lambently poignant, it was simply his onomatomania in action, though malleable enough to give him some control over how exactly it manifests itself. (by QuaQua)
5
The pop star thought back to good times, when her career was still young and lambent, supported by an unobtrusive manager and malleable fans who gave her free reign to make music as she pleased, seeming to maintain their onomatomania for her name no matter what she did. (by Rudi)
4
With regard to Mr. Humbert: over all the electroshock therapy has proven generally most efficacious presenting only the briefest and unobtrusive lambent shadow of onomatomania, fixated on the name Lolita, which passes quickly then returns him to an eminently malleable and most jovial state of mind. (by gumo420)
3
Is this onomatomania? /
that is, an irresistible desire to repeat /
certain words, the teacher asked /
then began to write on the black board: /
Ono Island/
Ono is land /
ono is Hawaiian for "delicious"/
Ono - a town of Benjamin, in the "plain of Ono"/
Ono means "small field" and ?no means "large field"/
in Japanese/
Mato means kill in Spanish/
Mato (Grosso) is one of the states of Brazil/
Mato (Kosyk) never ceased to write /
his Sorbian tales and poems/
Mania /
Then he handed to his malleable students /
a paper with all the manias listed on the Phrontistery/
asking them to write a poem in Maeterlinck’s style /
and unobtrusively the time passed and /
the lambent moonlight found the students still writing/
(by Margot Jack)
2
Whereas, in golden youth, he had proved himself a lion among literati, now in sere old age his lambent wit hardly flickered, his malleable mind calcified, his discourse reduced to mumbling onomatomania as he unobtrusively withdrew from company, mouthing despondently 'quad? . . . quan? . . . quad? . . . quan?'. (by Bud Myte)
1
Whenever the idea of onomatomania comes up in family conversation, we remember Sylvia's long obsession with the word "intransigent" which she used a dozen times a day to describe even the most pliant and unobstrusive people: me, for one (the most malleable and accomodating of women), not to mention her father, Bullroarer O'Brien, who may have been a bit rough around the edges, but who had a heart of lambent gold, or her sister Catherine, whose course in nighttime combat driving was eagerly elected by any recruit seeking a courteous and indulgent instructor. (by cusheamus)

7
He stood there, the camera unobtrusively tucked under his arm in the rain; and in my malleable mental state he convinced me that it wasn't recording, while I yammered on and on like an onomatomaniac about the lambent bolts dancing across the thunderheads so -- no pun intended -- shockingly. (by mediaprophet)