Place the very tip of your tongue slightly between your teeth. Blow air gently around it without voicing.

Americans pronounce thief as THEEF (/θif/). You'll hear it in sentences like "The theory of the thief was thrown out" or "Catch the match before the snatch thief runs" — more examples below.
Record yourself saying "thief" and play it back. The mic stays on your device — nothing's uploaded.
1 syllable, 3 sounds. Explore each sound's mouth shape and how it's made.
Place the very tip of your tongue slightly between your teeth. Blow air gently around it without voicing.

Pull the corners of your lips back slightly. Arch the middle-front of your tongue high toward the roof of the mouth.

Lift your bottom lip to touch the very bottom of your top front teeth. Blow air through this contact point without voicing.

Click any sentence to see the full breakdown — every link, every reduction, every flap-T.