兼ねる
1
to be unable to;to find difficult (unpleasant, awkward, painful) to do
after the -masu stem of verb
See also:
兼ねない (かねない)
こういう事情ですから、残念ながら、せっかくのご招待をお受けいたしかねるのです。
As such is the case, I am sorry I can't accept your kind invitation.
2
to serve two or more functions or roles simultaneously;to contain (or combine) two or more features
今日は、ばーさんのお使いを兼ねて街で買い物。
Today I'm shopping in town as well as running an errand for my grandmother.
3
to work in two or more jobs simultaneously (positions, etc.);to do alongside
4
to hesitate to do something (out of consideration for others)
5
to think of the future (as well as the present)