恐(おそ)らくはI fear that it's likely that, with all due respect

明日(あした)は恐(おそ)らくは雪(ゆき)が降(ふ)るだろう。

I fear that it's likely that it will snow tomorrow.

祖父(そふ)：「恐(おそ)らくは今日(きょう)が最期(さいご)の日(ひ)だ…。」

Grandfather: "I fear that it's likely that today is the last day..."

先生(せんせい)：「恐(おそ)らくは生徒(せいと)の半分(はんぶん)が赤(あか)点(てん)でしょうね。」

Teacher: "I fear that it's likely that half of the students will fail."

彼(かれ)とは仲良(なかよ)くなれないが、恐(おそ)らくは彼(かれ)は人見知(ひとみし)りなのだろう。

I can't get along with him, but I fear that it's likely that he is shy.

恐(おそ)らくは先輩(せんぱい)は賛成(さんせい)しないだろうが、僕(ぼく)は全(すべ)く新(あたら)しい戦術(せんじゅつ)を思(おも)いついた。

I fear that it's likely that my senior won't agree, but I came up with a completely new strategy.