syrupy

US /ˈsɪr.əp.i/
UK /ˈsɪr.əp.i/
"syrupy" picture
1.

resembling or containing syrup; thick and sweet

:
The pancakes were drenched in warm, syrupy maple syrup.
The cough medicine had a thick, syrupy consistency.
2.

(of a voice or manner) excessively sweet or sentimental

:
His syrupy voice made her cringe.
The actor delivered his lines with a syrupy, insincere tone.