steady

Synonyms: abiding brick-wall certain changeless constant durable enduring equable even firm immovable never-failing patterned regular reliable safe set set in stone solid solid as a rock stabile steadfast steady-going substantial sure unchangeable unchanging unfaltering unfluctuating uniform unqualified unquestioning unshaken unvarying unwavering

Antonyms: unfixed unstable unsteady weak wobbly

Synonyms: ceaseless confirmed consistent constant continuous equable eternal even faithful habitual incessant neverending nonstop persistent regular rhythmic stabile stable steady-going unbroken unfaltering unfluctuating uniform uninterrupted unremitting unvarying unwavering

Antonyms: broken discontinuous intermittent

Synonyms: allegiant ardent calm constant cool dependable equable fast imperturbable intense levelheaded liege loyal poised reliable reserved resolute sedate self-possessed sensible serene serious-minded settled single-minded sober staid staunch steadfast unswerving unwavering wholehearted

Antonyms: imbalanced unfaithful untrustworthy