| Play | Key Line | Modern Text | Original Text |
| Coriolanus | Cor I.iv.50.2 | Slain, sir, doubtless. | Slaine (Sir) doubtlesse. |
| Cymbeline | Cym III.iv.177 | If that his head have ear in music, doubtless | If that his head haue eare in Musicke, doubtlesse |
| Henry IV Part 1 | 1H4 III.ii.20 | As well as I am doubtless I can purge | As well as I am doubtlesse I can purge |
| Henry VI Part 1 | 1H6 I.ii.119 | Doubtless he shrives this woman to her smock; | Doubtlesse he shriues this woman to her smock, |
| Henry VI Part 1 | 1H6 IV.vii.44 | Doubtless he would have made a noble knight. | Doubtlesse he would haue made a noble Knight: |
| Henry VI Part 3 | 3H6 IV.vi.90 | For doubtless Burgundy will yield him help, | For doubtlesse, Burgundie will yeeld him helpe, |
| King John | KJ IV.i.129 | And, pretty child, sleep doubtless and secure | And, pretty childe, sleepe doubtlesse, and secure, |
| Measure for Measure | MM III.ii.64 | due of a bawd, why, 'tis his right. Bawd is he doubtless, | due of a baud, why 'tis his right. Baud is he doubtlesse, |
| Othello | Oth III.iii.240 | Why did I marry? This honest creature doubtless | Why did I marry? / This honest Creature (doubtlesse) |
| The Two Noble Kinsmen | TNK I.iii.47.2 | Doubtless | Doubtlesse |
| The Two Noble Kinsmen | TNK IV.ii.11 | The coy denials of young maids, yet doubtless | The coy denialls of yong Maydes, yet doubtles, |
| The Two Noble Kinsmen | TNK V.iii.70 | Doubtless the primest of men. I prithee run | Doubtlesse the prim'st of men: I pre' thee run |