undersing means to sing inadequately, or with too little vocal effort. Lexicurio rates it Sui generis — a strength score of 85 out of 100.
Etymology
From under- + sing.
verb
- 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 debiting both to the account of originals, quite innocent of either.”
- 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.”