undersing

Verb

1. To sing inadequately, or with too little vocal effort.
   • …the enthusiastic borderism of Scott, who, rather than that a freebooter should under-act his part, or a bard undersing his praise, took the liberty of sometimes inventing the action and then resounding its glories, and...
   • But the night’s true indictment of country’s man problem was the dullness of the performances by male stars exponentially more famous than Mr. Stapleton: Zac Brown, undersinging on “Beautiful Drug”; Kenny Chesney’s...
2. To sing beneath, or in accompaniment to; to sing an undersong.
   • Alas me! what a murmur and motion I hear, As of birds flying near! And the air undersings The soft stroke of their wings— And all life that approaches, I wait for in fear. - 1851, Elizabeth Barrett Browning, Prometheus...
   • Other post-Spenserian undersongs resonate with some of these implications… But even here, the stream of time is clearly the source of the Spenserian undersinging. - 1990, John Hollander, Melodious Guile: Fictive Pattern...