Vacuum and continuum are the only common ones I can think of. They come from Latin, as I'm sure do any other English words containing a double u, as this is almost a purely Latin feature, in words where the root ends in a u and the suffix is "um."
The word "happy" has two consonants in a row - 'p' and 'p'.
addaddlebuddycoddlecuddlediddleeddyfiddlegladdengiddygriddlehuddlehiddenkiddingladdermuddymiddlemaddernoddedoddpaddedpeddlepuddlepaddleproddedriddleriddenrudderreddenedsaddensuddentrottedudderwaddedwaddle
withhold
two bor-row
The word narrow has two syllables. (Nar-row)
This question has no answer in english. however in french there is a word when put in feminin form has three consecutive e's in a row which is "creee" which means "to create". The word has two accents in the first two e's. .
There are two syllables. Nar-row.
It has two syllables: BAH-row.
All words have at least one syllable. Burrow has two. Bur-row.
There are two syllables in the word 'parrot'.
Both. Maybe?
So far I only thought of skiing.