Standard Lemma guide

underfiring

noun · verb · 5 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.

  • Received-Pronunciation: /ˌʌndəːˈfaɪəɹɪŋ/
  • Southern-England: Recorded audio is listed in the source snapshot.
  • General-American: /ˌʌndɚˈfaɪəɹɪŋ/
  • General-American: /ˌʌndɚˈfaɪɹɪŋ/
  • rhymes with -aɪəɹɪŋ

1

noun

Meaning 1

Intentional operation of a boiler, furnace, oven, etc., at a low level.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: overfiring

2

noun

Meaning 2

The state of not burning fuel at the desired level, and thus not providing heat efficiently.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: overfiring

3

noun

Meaning 3

Heating from below.

Definition source: English Wiktionary via Wiktextract

Usage: also, attributive, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: overfiring

4

noun

Meaning 4

The state of being insufficiently fired or underfired.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable

Topics: ceramics, chemistry, engineering, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: overfiring

5

verb

Meaning 5

present participle and gerund of underfire

Definition source: English Wiktionary via Wiktextract

Usage: form-of, gerund, participle, present

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

From under- (prefix meaning ‘beneath; insufficient’) + firing, or underfire + -ing (suffix forming nouns from verbs denoting the act of doing something, an action, or the embodiment of an action).

See the etymology of the corresponding lemma form.