Sub

35 clues
Hero
Temp
Backup
Relief
U-boat
Hoagie
Reserve
Grinder
Fill in
Torpedo
Stand-in
Deli buy
Deli hero
Deli order
Long lunch?
Deli choice
Benchwarmer
Deli delight
Stand in for
Bench warmer?
Fill in (for)
Deli sandwich
Deli offering
Hero sandwich
Long sandwich
Hefty sandwich
Ocean traveler
Second-stringer
Foot-long lunch
Sizable sandwich
Undersea prowler
Underwater vessel
Elongated sandwich
Foot-long sandwich
Hoagie, by another name
Similar answers:
1sec
3rs
40winks
4some
A1sauce
Aaaadvisor
Aaaas
Aaaautoclub
Aaabonds
Aaas
Aabatteries
Aacells
Aagonizes
Aahs
Aahsat
Aains
Aals
Aalst
Aaltosaxes
Aameetings