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Word a Day

acidic

adjective · /əˈsɪdɪk/ · Level 3 · Advanced

What does acidic mean?

acidic (adjective): having a pH less than 7, or being sour, or having the strength to neutralize alkalis, or turning a litmus paper red.

Definition: Wiktionary, CC BY-SA 4.0.

How do you pronounce acidic?

/əˈsɪdɪk/ (IPA, American English). The app reads every word aloud.

Where does acidic come from?

From acid + -ic.

Etymology: Wiktionary, CC BY-SA 4.0.

Test yourself: do you know “acidic”?

Tap an answer to check it. The same questions the app asks.

What does “acidic” mean?

remaining composed and level-headed at all times; impossible to fluster; not becoming frustrated or irritated easily

Not quite: that's what unflappable means.

lying beyond what is openly revealed or avowed (especially being kept in the background or deliberately concealed)

Not quite: that's what ulterior means.

having a pH less than 7, or being sour, or having the strength to neutralize alkalis, or turning a litmus paper red

Right! That's what “acidic” means.

willing to give and share unsparingly; showing a readiness to give more (especially money) than is expected or needed

Not quite: that's what generous means.

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