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LampPro Tip 1/3
Informal SpeechPlay
Use 'dunno' in casual conversations, not in professional or formal settings. SlideHe asked me for directions, and I just said 'dunno'.
LampPro Tip 2/3
Spoken UsagePlay
'Dunno' is mostly used in speaking rather than writing. SlideDunno if I'll go out tonight, I'm pretty tired.
LampPro Tip 3/3
Hesitation SoundPlay
People often use 'dunno' as a filler when hesitating or thinking. SlideHmm, dunno, let me check.