insincere or glib assent
• (n.) Insincere, flattering, or obsequious assent; hypocritical or pretended concurrence.
As`sen·ta'tion noun [ Latin assentatio . See Assent , v.] Insincere, flattering, or obsequious assent; hypocritical or pretended concurrence. « Abject flattery and indiscriminate assentation degrade as much as indiscriminate contradiction and noisy debate disgust. Ld. Che...
the practice of assenting readily, esp. obsequiously.