The term 'IF ONLY!' can be expressed in a variety of ways, as demonstrated by the crossword solutions ALAS (4 letters), HSIMI (5 letters), SO (2 letters), IHOPE (5 letters), IWISH (5 letters), WOULD (5 letters), IHOPESO (7 letters), and WOULDABEENNICE (14 letters). ALAS is an expression of sorrow or regret, while HSIMI is an acronym for 'How Sad It Makes Me Inside'. SO is an adverb used to express a wish or desire. IHOPE and IWISH are both expressions of desire or longing. WOULD is a modal verb used to express a wish or desire. IHOPESO is an expression of hope that something will happen, and WOULDABEENNICE is an expression of regret that something did not happen. All of these words and phrases are used to express the sentiment of 'IF ONLY!'