Definition

1. Verb (intransitive):

   • To be reduced or simplified to the most basic or essential parts: This meaning describes a process where a complex situation, idea, or quantity is condensed into its fundamental core or a much smaller, more manageable form.
   • To have as a final, fundamental result or meaning: This sense indicates that after all considerations, the main point or conclusion is a specific, often simpler, thing.

2. Verb (transitive):

   • To reduce the volume of a liquid by boiling: This literal meaning refers to the cooking process of simmering a liquid to evaporate water and concentrate its flavor and thickness.

Usage and Examples

• Intransitive Verb (to be the essential element):

  • All his arguments boil down to a fear of change. (His many points are fundamentally about this one thing.)
  • The advice boils down to this: work hard and be honest. (The core summary of the advice is these simple principles.)

• Intransitive Verb (to be reduced in quantity):

  • Once the soup boils down, it will have a richer flavor. (When the soup reduces in volume through boiling, its flavor concentrates.)

• Transitive Verb (to reduce by boiling):

  • You should boil down the maple sap to make syrup. (You must simmer the sap to evaporate water and create syrup.)
  • She boiled the stock down to a gelatinous consistency. (She reduced the stock by boiling it until it became very thick.)

Advanced Usage and Notes

• The phrasal verb is often used figuratively. The intransitive sense ("it boils down to...") is extremely common for summarizing complex issues.
• In the transitive sense, the object can be placed between "boil" and "down" (e.g., ) or after the phrase (e.g., ).

Variants and Related Words

• Reduction (n): The process or result of making something smaller or less in amount. (e.g., ).
• Condense (v): To make something more concise or dense. (e.g., ).
• Distill (v): To extract the essential meaning or most important aspects of something. (e.g., ).

Synonyms

• Reduce (especially for the cooking sense).
• Simplify.
• Come down to.
• Amount to.

Related Phrasal Verbs / Constructions

• Boil down to [something]: This is the standard construction for the figurative, intransitive meaning. It is almost always followed by "to."
  • Their disagreement boils down to a matter of trust.
• Boil away: To evaporate completely through boiling.
  • If you don't watch the pot, all the water will boil away.

Verb

1. cook until very little liquid is left
   • The cook reduced the sauce by boiling it for a long time
2. be cooked until very little liquid is left
   • The sauce should reduce to one cup
3. be the essential element
   • The proposal boils down to a compromise