Related Clues:

• Rigid, or grammatical time
• The rules governing the arrangement of words in sentences etc
• The rules governing the arranging of words
• Practise
• Anxious, nervous
• Anxious, high-strung
• Taut, strained
• Attribute of verbs signalling time
• Taut or strained
• The rules governing words arrangements
• Rules governing formation of sentences and phrases
• Utilisation
• Rules governing formation of words into sentences etc
• Nervous or tight
• Rules governing the use of words