song [v]
- summen
- leise singen

song [v]
- chantonner
- fredonner
- chanter à demi-voix

song [v]
- canticchiare
- cantare a mezza voce

song [v]
- canturrear
- cantar a media voz

song [v]
- croonen
- zacht zingen

song [v]
- nynna
- gnola

song [v]
- cantarolar

make a buzzing sound [v]
- buzz
- drone
- purr
- hum
- sing
- mutter

Present participle; Past participle
- crooning
- crooned
Present
- croon
- croon
- croons
- croon
- croon
- croon
Past
- crooned
- crooned
- crooned
- crooned
- crooned
- crooned
Future
- will croon
- will croon
- will croon
- will croon
- will croon
- will croon
Present conditional
- would croon
- would croon
- would croon
- would croon
- would croon
- would croon
Present Perfect
- have crooned
- have crooned
- has crooned
- have crooned
- have crooned
- have crooned
Past Perfect
- had crooned
- had crooned
- had crooned
- had crooned
- had crooned
- had crooned
Future Perfect
- will have crooned
- will have crooned
- will have crooned
- will have crooned
- will have crooned
- will have crooned
Past conditional
- would have crooned
- would have crooned
- would have crooned
- would have crooned
- would have crooned
- would have crooned
Imperative
- -
- croon
- -
- -
- -
- -