© 2026 Sloth Lingo. Learn easy. Lounge wisely.

testify

Intermediate (B1)

IPA: /ˈtɛstəˌfaɪ/

KK: /ˈtɛstəˌfaɪ/

intransitive verb
Definition

To make a statement about something, especially in a legal context, where someone declares what they know to be true, often under oath.


Example

The witness will testify in court about what they saw during the incident.


Tense Forms

Past: testified

Past Participle: testified


Conversation
Sloth A
Did you hear that Jane is going to testify in court next week?
Sloth B
Yeah, I heard! It must be pretty nerve-wracking for her.
Sloth A
I can’t imagine having to testify about something so serious.
Sloth B
I know, right? But I think she’s strong enough to handle it.

Synonyms & Antonyms
Synonyms
witness
declare
affirm
Antonyms
deny
refute
disprove
transitive verb
Definition

To give evidence or bear witness about something, often in a legal setting or to express a belief or opinion publicly.


Example

She was called to testify in court about what she saw during the accident.


Tense Forms

Past: testified

Past Participle: testified


Conversation
Sloth A
Did you hear that he's going to testify in court next week?
Sloth B
Yeah, I heard it might be a big deal for the case.
Sloth A
I wonder what he will testify about exactly.
Root Explanation

Testify → It is formed from "testis" (meaning witness) and the suffix "-fy" (meaning to make or cause to be). The word "testify" means to make a statement or bear witness, especially in a legal context.

Memory Tip

Think of being a 'witness' ('testis') and 'making' something known ('-fy') — that's why testify means to bear witness.

Visually Confused Words
tensify
pestify
pretestify
vestrify
trustify
esterify
Is this page helpful?
Sloth B
I think he saw something important, so it should be interesting.

Synonyms & Antonyms
Synonyms
witness
declare
affirm
Antonyms
deny
refute
disprove