- acacia
- acai
- antarctic
- antic
- arcana
- arctic
- arnica
- attic
- attract
- attractant
- cacti
- cairn
- cancan
- canna
- cant
- cantata
- cantina
- carat
- cart
- cataract
- circa
- circuit
- cirri
- citric
- crania
- critic
- currant
- curt
- curtain
- incant
- incur
- intact
- narc
- niacin
- nitric
- ricin
- runic
- tacit
- taciturn
- tact
- tactic
- tactician
- tannic
- tantric
- tinct
- titanic
- tract
- tunic
- uncut
- uric