to become gradually less strong, effective, or good; to weaken or deteriorate
to become smaller or fewer in number; to diminish
to refuse, esp courteously
to slope downwards; to descend
to bend down; to droop
said of a celestial body: to sink towards setting
to draw towards a close; to wane
to refuse (e.g. an offer) courteously
I declined her invitation
formal to refuse to undertake, engage in, or comply with (something)
to decline battle
in grammar, to list the inflectional forms of (a noun, pronoun, or adjective) in the prescribed order
declinable adj
decliner noun
[Middle English declinen via early French decliner from Latin declinare to turn aside, inflect, from de- + clinare to incline]