Synonyms for Tenuously:

adv.

ethereally (adverb)
subtly, finely, Ethereally.
lightly (adverb)
thinly, subtly, Ethereally.
narrowly (adverb)
slimly, thinly, lankily, narrowly, tightly, slenderly, skeletally, Leanly.

adv

ethereally (adverb)
subtly, finely, Ethereally.
lightly (adverb)
thinly, subtly, Ethereally.
narrowly (adverb)
slenderly, tightly, slimly, narrowly, finely, lankily, thinly, skeletally, Leanly.