Synonyms of diurnal
- 1 Syllable
- set
- 2 Syllables
- steadfast, daily, fixed, stable
- 3 Syllables
- enduring, circadian, durable, perennial, persistent, perpetual, unchanging, continual, changeless, perduring, unfading, long-lasting, abiding, forever, permanent
- 4 Syllables
- immutable, invariable, everlasting, perdurable
- 5 Syllables
- imperishable, indestructible