sturdily

/ˈstɜrdəli/
adverb
  1. In a strong, solid, and durable manner.
    • She stood sturdily against the strong wind.
    • The bridge was sturdily constructed to handle heavy traffic.
    • The table was sturdily built from oak.
  2. In a firm, determined, or resolute way.
    • The team sturdily refused to give up despite the loss.
    • He sturdily defended his opinion during the debate.
    • She sturdily maintained her principles under pressure.
Antonyms