to use flattery or deceit to persuade, get information etc from, (a person)

attempt to coax; flatter

to praise (a person) too much or insincerely (in order to please)

compliment excessively

to behave in a way that shows one has no self-respect

abase, demean oneself

to give help or encouragement to a person or thing that is weak, bad or undesirable

cater to, indulge