Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun outboard

2 senses of outboard

Sense 1
outboard motorboat, outboard -- (a motorboat with an outboard motor)
       => motorboat, powerboat -- (a boat propelled by an internal-combustion engine)

Sense 2
outboard motor, outboard -- (internal-combustion engine that mounts at stern of small boat)
       => internal-combustion engine, ICE -- (a heat engine in which combustion occurs inside the engine rather than in a separate furnace; heat expands a gas that either moves a piston or turns a gas turbine)

Antonyms of adj outboard

1 sense of outboard

Sense 1
outboard (vs. inboard) -- (located away from the midline of a vessel or aircraft; "the outboard section of a wing"; "outboard rigging")

inboard (vs. outboard) -- (located within the hull or nearest the midline of a vessel or aircraft; "the inboard flaps on the wing")

Similarity of adj outboard

1 sense of outboard

Sense 1
outboard (vs. inboard) -- (located away from the midline of a vessel or aircraft; "the outboard section of a wing"; "outboard rigging")
       => portable -- (of a motor designed to be attached to the outside of a boat's hull; "a portable outboard motor")