spontaneous, ad-lib, unwritten
(adjective) said or done without having been planned or written in advance; “he made a few ad-lib remarks”
spontaneous, self-generated
(adjective) happening or arising without apparent external cause; “spontaneous laughter”; “spontaneous combustion”; “a spontaneous abortion”
Source: WordNet® 3.1
spontaneous (comparative more spontaneous, superlative most spontaneous)
Self-generated; happening without any apparent external cause.
Done by one's own free choice, or without planning.
Proceeding from natural feeling or native tendency without external or conscious constraint
Arising from a momentary impulse
Controlled and directed internally; self-active; spontaneous movement characteristic of living things
Produced without being planted or without human labor; indigenous
Random.
Sudden, without warning.
• (self-generated): autonomous
• (done by one's own free choice): autonomous
• (proceeding from natural feeling...): autonomous
• (sudden, without warning): abrupt, precipitous, subitaneous; see also sudden
Source: Wiktionary
Spon*ta"ne*ous, a. Etym: [L. spontaneus, fr. sponte of free will, voluntarily.]
1. Proceding from natural feeling, temperament, or disposition, or from a native internal proneness, readiness, or tendency, without constraint; as, a spontaneous gift or proportion.
2. Proceeding from, or acting by, internal impulse, energy, or natural law, without external force; as, spontaneous motion; spontaneous growth.
3. Produced without being planted, or without human labor; as, a spontaneous growth of wood. Spontaneous combustion, combustion produced in a substance by the evolution of heat through the chemical action of its own elements; as, the spontaneous combustion of waste matter saturated with oil.
– Spontaneous generation. (Biol.) See under Generation.
Syn.
– Voluntary; uncompelled; willing.
– Spontaneous, Voluntary. What is voluntary is the result of a volition, or act of choice; it therefore implies some degree of consideration, and may be the result of mere reason without excited feeling. What is spontaneous springs wholly from feeling, or a sudden impulse which admits of no reflection; as, a spontaneous burst of applause. Hence, the term is also applied to things inanimate when they are produced without the determinate purpose or care of man. "Abstinence which is but voluntary fasting, and . . . exercise which is but voluntary labor." J. Seed. Spontaneous joys, where nature has its play, The soul adopts, and owns their firstborn away. Goldsmith.
– Spon*ta"ne*ous*ly, adv.
– Spon*ta"ne*ous*ness, n.
Source: Webster’s Unabridged Dictionary 1913 Edition
26 January 2025
(verb) leave undone or leave out; “How could I miss that typo?”; “The workers on the conveyor belt miss one out of ten”
Decaffeinated coffee is not caffeine-free. Studies from the National Institute of Health (US) have shown that virtually all decaf coffee types contain caffeine. A 236-ml (8-oz) cup of decaf coffee contains up to 7 mg of caffeine, whereas a regular cup provided 70-140 mg.
