Tentative language

relatively

in comparison to something else, to a certain degree

what I’d call

what I personally would describe as

you could say

it’s possible to express it that way

I’d say

in my opinion / I think

you could argue that

it’s possible to make a point that…

My impression is that

the way I see it / it seems to me

you wouldn’t say

it’s not really correct to claim that…

fairly

quite / to a reasonable degree

it’s likely that

it’s probable that…

to some degree

partly / not completely, but to a certain extent

to some extent

partly / up to a point

it’s sometimes difficult to say

it’s not always easy to determine

generally

in most cases / overall