Everybody uses refrigerator at the end of their haikus
Why not, hippopotamus or lasciviously or undeniable or abbreviation or perceptivity or or or...


WHY ONLY REFRIGERATOR!!?!?!?


Concerning a boat I think mediterranean would be more appropriate, or even cannibalism.
Self-preservation even works.



[Disclaimer: Yes I did google five syllable words. So what, haven't you ever written anything?]