could titter
Verbe régulier : titter - tittered- tittered
Traduction française : rire bêtement ou sottement - glousser 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could titter
you could titter
she could titter
we could titter
you could titter
they could titter 	I could be tittering
you could be tittering
she could be tittering
we could be tittering
you could be tittering
they could be tittering	I could have tittered
you could have tittered
she could have tittered
we could have tittered
you could have tittered
they could have tittered	I could have been tittering
you could have been tittering
she could have been tittering
we could have been tittering
you could have been tittering
they could have been tittering	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't titter
you couldn't titter
she couldn't titter
we couldn't titter
you couldn't titter
they couldn't titter 	I couldn't be tittering
you couldn't be tittering
she couldn't be tittering
we couldn't be tittering
you couldn't be tittering
they couldn't be tittering	I couldn't have tittered
you couldn't have tittered
she couldn't have tittered
we couldn't have tittered
you couldn't have tittered
they couldn't have tittered	I couldn't have been tittering
you couldn't have been tittering
she couldn't have been tittering
we couldn't have been tittering
you couldn't have been tittering
they couldn't have been tittering	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I titter?
could you titter?
could she titter?
could we titter?
could you titter?
could they titter? 	could I be tittering?
could you be tittering?
could she be tittering?
could we be tittering?
could you be tittering?
could they be tittering? 	could I have tittered?
could you have tittered?
could she have tittered?
could we have tittered?
could you have tittered?
could they have tittered? 	could I have been tittering?
could you have been tittering?
could she have been tittering?
could we have been tittering?
could you have been tittering?
could they have been tittering? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I titter?
couldn't you titter?
couldn't she titter?
couldn't we titter?
couldn't you titter?
couldn't they titter? 	couldn't I be tittering?
couldn't you be tittering?
couldn't she be tittering?
couldn't we be tittering?
couldn't you be tittering?
couldn't they be tittering? 	couldn't I have tittered?
couldn't you have tittered?
couldn't she have tittered?
couldn't we have tittered?
couldn't you have tittered?
couldn't they have tittered? 	couldn't I have been tittering?
couldn't you have been tittering?
couldn't she have been tittering?
couldn't we have been tittering?
couldn't you have been tittering?
couldn't they have been tittering?