humpback whaleˌhumpback ˈwhale (also humpback) noun [countable] 
a large whale
a large whale- imperious
- imperiously
- imperiousness
- imperishable
- impermanence
- impermanent
- impermeable
- impermissible
- impersonal
- impersonally
- impersonate
- impersonation
- impersonator
- impertinence
- impertinent
- impertinently
- imperturbability
- imperturbable
- imperturbably
- waterway
- waterwheel
- waterwings
- waterworks
- watery
- Watford