Synonyms:
- abstract,
- blank,
- colorless,
- deadpan,
- detached,
- disinterested,
- dispassionate,
- earnest,
- empty,
- expressionless,
- fishy,
- glassy,
- grave,
- impassive,
- impersonal,
- inexpressive,
- sedate,
- sober,
- sobersided,
- solemn,
- somber,
- staid,
- unexpressive,
- vacant,
- weighty,
- wooden