1. (verb) make high-pitched sounds

• cheep
• chirrup
• peep

2. (verb) sing in modulation

• tweedle

1. (noun) a sharp sound made by small birds or insects

• tweet

2. (verb) make high-pitched sounds

• chitter
• twitter

1. (noun) a sharp sound made by small birds or insects

• sound

2. (verb) make high-pitched sounds

• emit
• let loose
• let out
• utter

3. (verb) sing in modulation

• sing

1. (verb) sing in modulation

• music

1. (noun) a sharp sound made by small birds or insects

• cheep
• chirrup
• peep
• chirpy
• tweedle

2. (verb) make high-pitched sounds

• cheep
• cheep
• peep
• peep
• chirrup
• twitter
• peeper