'twere a contraction of it were

• unbearable
• unbearableness
• unbearablenesses
• unbearably
• unbearded
• unbearing
• unbears
• ulmins
• Ulmus
• ulna
• ulnae
• ulnar
• ulnare
• ulnaria
• uloses
• ulosis
• Ulothrix
• Ulotrichales
• ulotrichies
• ulotrichous
• ulotrichy
• ulster
• ulstered
• ulsterette
• ulsterettes