slender reed
A person, fact, or resource on which one can rely only to a limited extent.
"It was perfectly natural for you to think that a lad of eighteen was a slender reed to lean on in the time of trouble and danger."
VERBS
be, look
ADV
very
She has a very slender build, so most clothes fit her perfectly.
quite
boyishly
The young actor had a boyishly slender build that made him perfect for teenage roles.
VERBS
be, seem | remain
ADV
decidedly, very
The profits from the small shop were very slender that year.
fairly, pretty, rather