ETYM Old Eng. if, gif, AS. gif.
1. In case that; granting, allowing, or supposing that; -- introducing a condition or supposition.
2. Whether.

ETYM Formerly, onles, onlesse, onlesse that, that is, in less, in a less case. Related to On, and Less.
1. Upon any less condition than (the fact or thing stated in the sentence or clause which follows).
2. If not; supposing that not; if it be not; were it not that; except.

ETYM Old Eng. when, whan, whenne, whanne, AS. hwaenne, hwanne, hwonne; akin to OS. hwan, OD. wan, Old High Germ. wanne, German wann when, wenn if, when, Goth. hwan when, and to Eng. who. Related to Who.
(Homonym: wen).
1. At what time; used interrogatively.
2. At what time; at, during, or after the time that; at or just after, the moment that.
3. Which time; then; -- used elliptically as a noun. + prikaži više

At any time whatever.

(Homonym: weather, wether).
In case; if; -- used to introduce the first or two or more alternative clauses.

IFF