KEY: Insure.
SYN: Provide, stabilitate, guarantee, secure, warrant.
ANT: Imperil, jeopardize, shake, stake.

• Inflict
• Infliction
• Influence
• Influence \v
• Influential
• Infold, [See ENFOLD]
• Inform
• Informal, [See FORMAL]
• Information
• Infraction
• Infrangible, [See FRANGIBLE]
• Infrequency
• Infrigidation, [See INCANDESCENCE]
• Infringe
• Infuriate, [See INFLAME]
• Infuse
• Ingenious
• Ingenuous
• Inglorious
• Ingraft, [See GRAFT]
• Ingratiate
• Ingratitude, [See GRATITUDE]
• Ingredient
• Ingress, [See EGRESS]
• Ingurgitate, [See SWALLOW]