vary

Etymology

From Middle English varien, from Old French varier, from Latin variō (“to change, alter, make different”), from varius (“different, various”); see various.

verb

1. (transitive) To change with time or a similar parameter.
   He varies his magic tricks so as to minimize the possibility that any given audience member will see the same trick twice.
2. (transitive) To institute a change in, from a current state; to modify.
   You should vary your diet. Eating just bread will do you harm in the end.
   a. 1687, Edmund Waller, to Phyllis Gods, that never change their state, / Vary oft their love and hate.
3. (intransitive) Not to remain constant: to change with time or a similar parameter.
   His mood varies by the hour.
   The sine function varies between −1 and 1.
4. (of the members of a group, intransitive) To display differences.
   The sprouting tendency of potatoes varies between cultivars, years and places of growing.
   In the new layout, it is proposed to provide three island platforms with six platform faces varying from 1,075 to 1,290 ft. in length and including bays. 1960 February, “The modernisation of Peterborough”, in Trains Illustrated, page 108
5. (intransitive) To be or act different from the usual.
   I'm not comfortable with 3.Nc3 in the Caro-Kann, so I decided to vary and play exd5.
6. (transitive) To make of different kinds; to make different from one another; to diversity; to variegate.
7. (transitive, music) To embellish; to change fancifully; to present under new aspects, as of form, key, measure, etc. See variation.
8. (intransitive, obsolete) To disagree; to be at variance or in dissension.
   the rich jewel which we vary for 1623, John Webster, The Devil's Law Case

noun

1. (obsolete) alteration; change.