| attendance | diligent service, dutiful ministration, assiduous attention |
| dishonest | undutiful, unreliable, irresponsible |
| due | duly, dutifully, fully |
| duteous | dutiful, obedient, of allegiance |
| obedient | of obedience, dutiful |
| obsequious | dutiful [without suggesting servility]; appropriate after a death |
| observance | honour, dutiful ceremony, due respect |
| pia mater | [Latin] dutiful mother: membrane covering the brain; brain |
| pious | religious, holy; or: dutiful, loyal |
| towardly | dutiful, helpful, friendly |
| unduteous | undutiful, unfilial, disloyal |