adj · 3 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:/ˈbeɪsləs/
US:Recorded audio is listed in the source snapshot.
homophone: bassless
CMU ARPABET:B EY1 S L AH0 S
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
adj
Meaning 1
Of reasoning: based on something that is not true, or not based on solid reasons or facts; unfounded; without a basis.
Definition source: English Wiktionary via Wiktextract
Usage: not-comparable
Examples
baseless accusations; baseless rumors
Meaning relationships
Synonyms: groundless, unfounded, unsupported
Antonyms: none provided
2
adj
Meaning 2
Without a physical base.
Definition source: English Wiktionary via Wiktextract
Usage: not-comparable
No example sentence was provided for this meaning.
Etymology tree Proto-Indo-European *gwem- Proto-Indo-European *-tis Proto-Indo-European *gwémtis Proto-Hellenic *gwə́tis Ancient Greek βᾰ́σῐς (bắsĭs)bor. Latin basis Old French basebor. Middle English base English base Proto-Indo-European *lewh1- Proto-Indo-European *lewHs-der. Proto-Germanic *leusaną Proto-Germanic *lausaz Proto-Germanic *-lausaz Proto-West Germanic *-laus Old English -lēas Middle English -les English -less English baseless From base + -less.