Though I do find this word to be particularly euphonious, I have always had trouble remembering how to spell it, which means it finds its way into what I write only infrequently.
acquiesce, v.
1. intr. To remain at rest, either physically or mentally; to rest satisfied (in a place or state). Obs.
b. To acquiesce from: To rest, or cease from. Obs. rare.
c. To acquiesce under: To remain in quiet subjection, to submit quietly, to remain submissive. Obs.
2. To agree tacitly to, concur in; to accept (the conclusions or arrangements of others).
b. Const. to, with. Obs.
3. trans. To bring to rest; to appease, satisfy, or harmonize. Obs.