IPA: /ˈstɛdiəst/
KK: /ˈstɛdɪɪst/
The most stable or constant; not likely to change or fluctuate.
He is the steadiest player on the team, always performing well under pressure.
Comparative: steadier
Superlative: steadiest
Steadiest → It is formed from "steady" (from Old English *stædige*, meaning firm or stable) and the suffix "-est" (meaning the most). The word "steadiest" means the most firm or stable among a group.
Think of something that is the "most stable" or "most firm" — that's what steadiest means.