徒

also 無駄

1. noun, na-adjective futility; waste; uselessness; pointlessness; idleness

ただ

1. takes の, noun, usually in kana ordinary; common; usual
2. usually in kana, esp. 只 if written with kanji free of charge; free
3. usually in kana, usu. as ～では... unaffected; as is; safe
4. adverb, usually in kana only; merely; just; simply
5. conjunction, usually in kana, esp. 但 if written with kanji but; however; nevertheless; except

あだ

1. na-adjective, noun vain; futile; transient; frivolous

と

1. noun party; set; gang; company; person

ず

1. noun, historical imprisonment (for 1-3 years; third most severe of the five ritsuryō punishments)

かち also 徒士 · 徒歩 · 歩 · 歩行

1. noun foot soldier (Edo period); samurai on foot
2. archaic going on foot; walking

いたずら also 徒ら

1. na-adjective, usually in kana, usu. as いたずらに useless; vain; aimless; idle