1. Thrown in between other words or phrases; parenthetical; ejaculatory; as, an interjectional remark 
2. Pertaining to, or having the nature of, an interjection; consisting of natural and spontaneous exclamations

Encyclopedia: Interjectional

• reciprocal-inhibition therapy
• reciprocality
• reciprocally
• reciprocate
• reciprocating engine
• reciprocating saw
• reciprocation
• reciprocative
• reciprocatory
• reciprocity
• recirculation
• recision
• recission
• recital
• recitalist
• recitation
• recitative
• recite
• reciter
• reck
• reckless
• recklessly
• recklessness
• reckon
• reckoner