ALT

Happening by turns; one following the other in succession of time or place; first one and then the other (repeatedly)

Example: "Alternate picking is a guitar playing technique"

Designating the members in a series, which regularly intervene between the members of another series, as the odd or even numbers of the numerals; every other; every second.

Example: "The alternate members 1, 3, 5, 7, etc."

Other; alternative.

Example: "He lives in an alternate universe and an alternate reality."

(of leaves) distributed singly at different heights of the stem, and at equal intervals as respects angular divergence.

Example: "Many trees have alternate leaf arrangement (e.g. birch, oak and mulberry)."

Relating to a choice between two or more possibilities.

Example: "An alternative proposition"

Other; different from something else.

Not traditional, outside the mainstream, underground.

Alternate, reciprocal.