unquesˈtionable adjective

1. Not to be questioned, certain, beyond doubt
2. Averse to conversation, or perh impatient of question (Shakespeare)

• hard-billed
• hard-bitten
• hardboard
• hardboards
• hard-boiled
• hard bop
• hard card
• hard cards
• hard case
• hard cases
• hard cash
• hard cheese
• hard coal
• hard copies
• hard copy
• hard-copy
• hard core
• hard-core
• hard court
• hard courts
• hardcover
• hard-cured
• hard currencies
• hard currency
• hard disk