последствие meaning in English — aftermath, backwash, consequence

English meaning

aftermath noun The period or situation that results from a significant, usually damaging, event.
backwash noun A backward flow of water, as from oars, a propeller, breaking waves, etc.
consequence noun A result or effect that follows from an action or cause.
consequent adj Following as a result, inference, or natural effect.
ramification noun A branching-out, the act or result of developing branches; specifically the divergence of the stem and limbs of a plant into smaller ones, or of similar developments in blood vessels, anatomical structures etc.
repercussion noun A bad result of an action or event, usually one that arrives later and indirectly. Usually plural.

последствие is used for these senses in English:

aftermath That which happens after, that which follows, usually of strongly negative connotation in most contexts, implying a preceding catastrophe.
backwash The result or consequence of an event; an aftermath.
consequence An effect; something that follows a cause as a result.
consequence (especially when preceded by "of") Importance, influence, or significance.
consequent An event which follows another.
ramification (figurative, often, in plural) An offshoot of a decision, fact etc.; a consequence or implication, especially one which complicates a situation.
repercussion A consequence or ensuing result of some action.
sequela (medicine) Chiefly in the plural: a condition or disease which follows chronologically after an earlier one, being either partly or wholly caused by it, or made possible by it.

noun A backward flow of water, as from oars, a propeller, breaking waves, etc.
noun The similar flow of air from an aircraft engine.
noun The result or consequence of an event; an aftermath.
noun The saliva, spit or food particles that have flowed back into a drink after someone has drunk from it.