1. Characterized by an absence of force or forcefulness
   - undynamic 
2. Lacking strength or vigour
   - asthenic, debilitated, enervated

See also: backward, moribund, stagnant, weak

• Arizonian
• Arjuna
• ark
• Ark of the Covenant
• baton twirler
• Batrachia
• batrachian
• Batrachoididae
• batrachomyomachia
• Batrachoseps
• bats
• batsman
• Batswana
• batt
• battalion
• batten
• batten down
• batter
• batter bread
• batter's box
• batter-fried
• battercake
• battered
• batterer
• battering