| KJ V.i.36 | [Bastard to King John] wild amazement hurries up and down / The little number of your doubtful friends |
| KL V.i.12 | [Regan to Edmund, of Gonerill] I am doubtful that you have been conjunct ... with her |
| Mac III.ii.7 | [Lady Macbeth to Macbeth] 'Tis safer to be that which we destroy / Than by destruction dwell in doubtful joy |
| MW IV.v.77 | [Host to Caius, of himself] in perplexity and doubtful dilemma |
| TN IV.iii.27 | [Olivia to Sebastian] Plight me the full assurance of your faith, / That my most jealous and too doubtful soul / May live at peace |
| TS induction.1.92 | [Lord to First Player] I am doubtful of your modesties |