- acid
- acidic
- addict
- addiction
- addition
- anaconda
- antacid
- candid
- canid
- cicada
- coda
- codon
- condition
- condo
- condonation
- data
- diatonic
- dicta
- dictation
- diction
- didact
- didactic
- dino
- dint
- ditto
- dodo
- donation
- doodad
- idiot
- idiotic
- indica
- indication
- indicia
- indict
- nada
- naiad
- octad
- toad