Synonyms of diuturnal
- 1 Syllable
- firm, tough, strong, stout, sound, fast
- 2 Syllables
- fixed, stable, constant, lasting
- 3 Syllables
- enduring, reliable, impervious, durable, persistent, resistant, tenacious, perduring, abiding, substantial, permanent
- 4 Syllables
- long-continued, perdurable, dependable