highball
1 antonym for highball — opposites grouped by meaning.
Verb — To inflate a figure or claim well beyond what is realistic.
Antonyms
How to use highball
The word patterns that sound natural to a native speaker.
Etymology
From railroad signalling, where a raised ("high") ball-shaped signal meant "go ahead at full speed" — the sense later carried over to exaggerated estimates and to the tall drink named for its glass.
Full origin of highball →