cusp

Fetched 2026-10-26 (cache).

Datamuse reports no synonyms or antonyms for this word.

Noun

1. A sharp [[point]] or pointed end.
2. {{lb|en|figuratively}} An important moment when a decision is made that will determine future events.
3. {{lb|en|geometry}} A point of a [[curve]] where the curve is [[continuous]] but has no [[derivative]], but such that it has a derivative at every nearby point.
4. {{lb|en|architecture}} A point made by the intersection of two curved lines or curved structures, a common [[motif]] in [[Gothic]] architecture.<ref>Russell Sturgis, ed. (1902). ''A Dictionary of Architecture and Building: Biographical, Historical, and Descriptive''. 3. Macmillan.</ref>
5. {{lb|en|astrology}} A boundary between [[zodiac]]al [[astrological sign|signs]] and [[house]]s.
6. {{lb|en|dentistry}} Any of the pointed parts of a [[canine tooth]] or [[molar]].
7. {{lb|en|anatomy}} A [[flap]] of a [[valve]] of a [[heart]] or [[blood vessel]].
8. A point of transition.

Verb

1. {{lb|en|slang}} To behave in a reckless or dangerous manner.

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.