• (adv.) At what time; -- used interrogatively.
  • (adv.) At what time; at, during, or after the time that; at or just after, the moment that; -- used relatively.
  • (adv.) While; whereas; although; -- used in the manner of a conjunction to introduce a dependent adverbial sentence or clause, having a causal, conditional, or adversative relation to the principal proposition; as, he chose to turn highwayman when he might have continued an honest man; he removed the tree when it was the best in the grounds.
  • (adv.) Which time; then; -- used elliptically as a noun.

Compare when with other words:

wheen vs. when

when vs. whin

when vs. whew

ween vs. when

when vs. whet

when vs. wren

when vs. whey

hen vs. when

when vs. whilst

when vs. win

but vs. when

mobile vs. when

when vs. whence

when vs. where

whan vs. when

during vs. when

upon vs. when

when vs. whereon

when vs. while

place vs. when

once vs. when

hewn vs. when

when vs. whenever

what vs. when

time vs. when

since vs. when

then vs. when