Synonyms for groundless
- adjective
Most common
All synonyms
Adjective
1. Unfounded — without any grounds to support it; baseless
unfounded, baseless, ill-founded, unsubstantiated, unsupported, unwarranted, false, unjustified, unproved UK, ungrounded, unproven, gratuitous, idle, chimerical, vain, wild, ill-grounded, flimsy
Definitions
- adj. 1
Without any grounds to support it; baseless.
Related words
- Word family
- groundlessness
Example sentences
- unfounded Do not spread unfounded slander against anyone.
- baseless You've got quite the talent for making baseless accusations.
- unsubstantiated Certainty, it was an unsubstantiated rumour.
Popularity over time
| Word | 1850 → 2019 | Trend |
|---|---|---|
| groundless | falling | |
| unfounded | steady | |
| baseless | steady | |
| unsubstantiated | rising |
Use in printed books, per decade from 1850 to 2019.
By length
- 4 letters
- wild1, idle2, vain1
- 5 letters
- false1
- 6 letters
- flimsy2
- 8 letters
- baseless2, unproven3, unproved2
- 9 letters
- unfounded3
- 10 letters
- gratuitous4, ungrounded, chimerical4
- 11 letters
- unwarranted4, unsupported4, unjustified4
- 15 letters
- unsubstantiated6
The small number after each word is its number of syllables (idle2 = 2 syllables).