adj · noun · verb · 15 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
UK:/ˈsɪə.ɹɪ.əl/
US:/ˈsɪɹ.i.əl/
Australia:Recorded audio is listed in the source snapshot.
homophone: cereal
CMU ARPABET:S IH1 R IY2 AH0 L
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
adj
Meaning 1
Having to do with or arranged in a series.
Definition source: English Wiktionary via Wiktextract
Usage: not-comparable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: sequential
Antonyms: none provided
2
adj
Meaning 2
Who performs a specified action or course of action repeatedly or regularly.
Definition source: English Wiktionary via Wiktextract
Usage: not-comparable
Examples
The serial killer had a string of victims across seven states.
He was a serial entrepreneur, always coming up with a new way to make cash.
Meaning relationships
Synonyms: career
Antonyms: none provided
3
adj
Meaning 3
Published or produced in installments.
Definition source: English Wiktionary via Wiktextract
Usage: not-comparable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
4
adj
Meaning 4
Of or relating to a grammatical aspect relating to an action that is habitual and ongoing.
Definition source: English Wiktionary via Wiktextract