IPA: /ˈsteɪdɪst/
KK: /steɪdɪst/
This word describes someone or something that is very serious, calm, and traditional, often lacking in excitement or enthusiasm.
The staidest member of the group preferred to stick to the traditional ways of doing things.
Staidest is derived from the word 'staid' (from Middle English 'stayed', meaning settled or established) with the superlative suffix '-est' (meaning most). The word 'staidest' means the most settled or established, often referring to a person's demeanor or character.
Think of someone who is 'settled' or 'established' ('staid') and then add '-est' to remember that 'staidest' means the most settled or established.