1. (verb)decline to become smaller or worse as house prices decline; his declining health
2. decline to politely say "no" I declined the invitation.; I'm afraid I'll have to decline.
3. (noun)decline a decrease in amount or quality a decline in church attendance; a city in decline; the decline of the Roman empire
Definition of 'decline'
Webster Dictionary
1. (verb)decline to bend, or lean downward; to take a downward direction; to bend over or hang down, as from weakness, weariness, despondency, etc.; to condescend
2. (verb)decline to tend or draw towards a close, decay, or extinction; to tend to a less perfect state; to become diminished or impaired; to fail; to sink; to diminish; to lessen; as, the day declines; virtue declines; religion declines; business declines
3. (verb)decline to turn or bend aside; to deviate; to stray; to withdraw; as, a line that declines from straightness; conduct that declines from sound morals
4. (verb)decline to turn away; to shun; to refuse; -- the opposite of accept or consent; as, he declined, upon principle
5. (verb)decline to bend downward; to bring down; to depress; to cause to bend, or fall
6. (verb)decline to cause to decrease or diminish
7. (verb)decline to put or turn aside; to turn off or away from; to refuse to undertake or comply with; reject; to shun; to avoid; as, to decline an offer; to decline a contest; he declined any participation with them
8. (verb)decline to inflect, or rehearse in order the changes of grammatical form of; as, to decline a noun or an adjective
9. (verb)decline to run through from first to last; to repeatlike a schoolboy declining a noun
10. (verb)decline a falling off; a tendency to a worse state; diminution or decay; deterioration; also, the period when a thing is tending toward extinction or a less perfect state; as, the decline of life; the decline of strength; the decline of virtue and religion
11. (verb)decline that period of a disorder or paroxysm when the symptoms begin to abate in violence; as, the decline of a fever
12. (verb)decline a gradual sinking and wasting away of the physical faculties; any wasting disease, esp. pulmonary consumption; as, to die of a decline