(ただ)

ただ
adverb/noun
free of charge, merely, only
1. free of charge, gratis
Without cost or payment.
この入場(にゅうじょう)(ただ)です。
Admission is free.
(ただ)でもらった(ほん)だ。
It's a book I got for free.
(ただ)より(たか)(もの)はない。
There's no such thing as a free lunch.
Well-known proverb
2. merely, simply, only
Nothing more than; just.
(ただ)()ているだけです。
I'm just looking.
(ただ)()いてみただけだ。
I was just asking.
(ただ)(だま)って()っているしかなかった。
All I could do was wait in silence.
3. ordinary, common
Not special or exceptional.
(ただ)風邪(かぜ)だと(おも)う。
I think it's just a common cold.
(ただ)(みず)じゃない。
It's not just ordinary water.
(かれ)(ただ)学生(がくせい)ではなく、会社(かいしゃ)経営(けいえい)している。
He's not just an ordinary student — he also runs a company.

(ただ) has multiple meanings depending on context.

AS "FREE":

  • (ただ)で (for free)
  • (ただ)でもらう (get for free)

AS "MERELY/ONLY":

  • (ただ)〜だけ (just ~, only ~)
  • (ただ)の (mere, ordinary)

COMMON EXPRESSIONS:

  • (ただ)より(たか)(もの)はない (There's no such thing as a free lunch)
  • (ただ)では()まない (won't get away with it easily)

WRITING NOTE:

  • Often written in hiragana: ただ
  • Kanji (ただ) or (ただ) less common